For Immediate Release
February 7, 2003
Are You
Ready?
Note: To read the other chapters in this online book, please visit:
http://www.fema.gov/areyouready/
National Security Emergencies
In addition to the natural and technological hazards described in this
publication, Americans face threats posed by hostile governments or extremist
groups. These threats to national security include acts of terrorism and acts of
war. The following is general information about national security emergencies.
For more information about how to prepare for them, including volunteering in a
Citizen Corps program, see the “For More Information” chapter at the end of this
guide.
Terrorism
Terrorism is the use of force or violence against persons or property in
violation of the criminal laws of the United States for purposes of
intimidation, coercion or ransom. Terrorists often use threats to create fear
among the public, to try to convince citizens that their government is powerless
to prevent terrorism, and to get immediate publicity for their causes. Acts of
terrorism range from threats of terrorism, assassinations, kidnappings,
hijackings, bomb scares and bombings, cyber attacks (computer-based), to the use
of chemical, biological and nuclear weapons. High-risk targets include military
and civilian government facilities, international airports, large cities and
high-profile landmarks. Terrorists might also target large public gatherings,
water and food supplies, utilities, and corporate centers. Further, they are
capable of spreading fear by sending explosives or chemical and biological
agents through the mail. In the immediate area of a terrorist event, you would
need to rely on police, fire and other officials for instructions. However, you
can prepare in much the same way you would prepare for other crisis events.
Preparing for terrorism
- Wherever you are, be aware of your surroundings. The very nature of
terrorism suggests there may be little or no warning.
- Take precautions when traveling. Be aware of conspicuous or unusual
behavior. Do not accept packages from strangers. Do not leave luggage
unattended. Unusual behavior, suspicious packages and strange devices should
be promptly reported to the police or security personnel.
- Do not be afraid to move or leave if you feel uncomfortable or if
something does not seem right.
- Learn where emergency exits are located in buildings you frequent. Notice
where exits are when you enter unfamiliar buildings. Plan how to get out of a
building, subway or congested public area or traffic. Note where staircases
are located. Notice heavy or breakable objects that could move, fall or break
in an explosion.
- Assemble a disaster supply kit at home and learn first aid. Separate the
supplies you would take if you had to evacuate quickly, and put them in a
backpack or container, ready to go.
- Be familiar with different types of fire extinguishers and how to locate
them. Know the location and availability of hard hats in buildings in which
you spend a lot of time.
Protection against cyber attacks
Cyber attacks target computer or telecommunication networks of critical
infrastructures such as power systems, traffic control systems, or financial
systems. Cyber attacks target information technologies (IT) in three different
ways. First, is a direct attack against an information system “through the
wires” alone (hacking). Second, the attack can be a physical assault against a
critical IT element. Third, the attack can be from the inside as a result of
compromising a trusted party with access to the system.
- Be prepared to do without services you normally depend on that could be
disrupted—electricity, telephone, natural gas, gasoline pumps, cash registers,
ATM machines, and internet transactions.
- Be prepared to respond to official instructions if a cyber attack triggers
other hazards, for example, general evacuation, evacuation to shelter, or
shelter-in-place, because of hazardous materials releases, nuclear power plant
incident, dam or flood control system failures.
Preparing for a building explosion
Explosions can collapse buildings and cause fires. People who live or work in
a multi-level building can do the following:
- Review emergency evacuation procedures. Know where emergency exits are
located.
- Keep fire extinguishers in working order. Know where they are located, and
learn how to use them.
- Learn first aid. Contact the local chapter of the American Red Cross for
information and training.
- Building owners should keep the following items in a designated place on
each floor of the building.
- Portable, battery-operated radio and extra batteries
- Several flashlights and extra batteries
- First aid kit and manual
- Several hard hats
- Fluorescent tape to rope off dangerous areas
Bomb threats
If you receive a bomb threat, get as much information from the caller as
possible. Keep the caller on the line and record everything that is said. Then
notify the police and the building management.
If you are notified of a bomb threat, do not touch any suspicious packages.
Clear the area around suspicious packages and notify the police immediately. In
evacuating a building, don’t stand in front of windows, glass doors or other
potentially hazardous areas. Do not block sidewalk or streets to be used by
emergency officials or others still exiting the building.
Suspicious parcels and letters
Be wary of suspicious packages and letters. They can contain explosives,
chemical or biological agents. Be particularly cautious at your place of
employment.
Some typical characteristics postal inspectors have detected over the years,
which ought to trigger suspicion, include parcels that—
- Are unexpected or from someone unfamiliar to you.
- Have no return address, or have one that can’t be verified as legitimate.
- Are marked with restrictive endorsements, such as “Personal,”
“Confidential” or “Do not x-ray.”
- Have protruding wires or aluminum foil, strange odors or stains.
- Show a city or state in the postmark that doesn’t match the return
address.
- Are of unusual weight, given their size, or are lopsided or oddly shaped.
- Are marked with any threatening language.
- Have inappropriate or unusual labeling.
- Have excessive postage or excessive packaging material such as masking
tape and string.
- Have misspellings of common words.
- Are addressed to someone no longer with your organization or are otherwise
outdated.
- Have incorrect titles or title without a name.
- Are not addressed to a specific person.
- Have handwritten or poorly typed addresses.
With suspicious envelopes and packages other than those that might contain
explosives, take these additional steps against possible biological and chemical
agents.
- Refrain from eating or drinking in a designated mail handling area.
- Place suspicious envelopes or packages in a plastic bag or some other type
of container to prevent leakage of contents. Never sniff or smell suspect
mail.
- If you do not have a container, then cover the envelope or package with
anything available (e.g., clothing, paper, trash can, etc.) and do not remove
the cover.
- Leave the room and close the door, or section off the area to prevent
others from entering.
- Wash your hands with soap and water to prevent spreading any powder to
your face.
- If you are at work, report the incident to your building security official
or an available supervisor, who should notify police and other authorities
without delay.
- List all people who were in the room or area when this suspicious letter
or package was recognized. Give a copy of this list to both the local public
health authorities and law enforcement officials for follow-up investigations
and advice.
- If you are at home, report the incident to local police.
What to do if there is an explosion
Leave the building as quickly as possible. Do not stop to retrieve personal
possessions or make phone calls. If things are falling around you, get under a
sturdy table or desk until they stop falling. Then leave quickly, watching for
weakened floors and stairs and falling debris as you exit.
- If there is a fire:
- Stay low to the floor and exit the building as quickly as possible.
- Cover your nose and mouth with a wet cloth.
- When approaching a closed door, use the back of your hand to feel the
lower, middle and upper parts of the door. Never use the palm of your hand
or fingers to test for heat: burning those areas could impair your ability
to escape a fire (i.e., ladders and crawling).
- If the door is NOT hot, open slowly and ensure fire and/or smoke is
not blocking your escape route. If your escape route is blocked, shut the
door immediately and use an alternate escape route, such as a window. If
clear, leave immediately through the door. Be prepared to crawl. Smoke and
heat rise. The air is clearer and cooler near the floor.
- If the door is hot, do not open it. Escape through a window. If you
cannot escape, hang a white or light-colored sheet outside the window,
alerting fire fighters to your presence.
- Heavy smoke and poisonous gases collect first along the ceiling. Stay
below the smoke at all times.
- If you are trapped in debris:
- Do not light a match.
- Do not move about or kick up dust. Cover your mouth with a handkerchief
or clothing.
- Rhythmically tap on a pipe or wall so that rescuers can hear where you
are. Use a whistle if one is available. Shout only as a last resort when you
hear sounds and think someone will hear you—shouting can cause a person to
inhale dangerous amounts of dust.
Chemical and Biological Weapons
In case of a chemical or biological weapon attack near you, authorities will
instruct you on the best course of action. This may be to evacuate the area
immediately, to seek shelter at a designated location, or to take immediate
shelter where you are and seal the premises. The best way to protect yourself is
to take emergency preparedness measures ahead of time and to get medical
attention as soon as possible, if needed.
Chemical
Chemical warfare agents are poisonous vapors, aerosols, liquids or solids
that have toxic effects on people, animals or plants. They can be released by
bombs, sprayed from aircraft, boats, or vehicles, or used as a liquid to create
a hazard to people and the environment. Some chemical agents may be odorless and
tasteless. They can have an immediate effect (a few seconds to a few minutes) or
a delayed effect (several hours to several days). While potentially lethal,
chemical agents are difficult to deliver in lethal concentrations. Outdoors, the
agents often dissipate rapidly. Chemical agents are also difficult to produce.
There are six types of agents:
- Lung-damaging (pulmonary) agents such as phosgene,
- Cyanide,
- Vesicants or blister agents such as mustard,
- Nerve agents such as GA (tabun), GB (sarin), GD (soman), GF, and VX,
- Incapacitating agents such as BZ, and
- Riot-control agents (similar to MACE).
Biological
Biological agents are organisms or toxins that can kill or incapacitate
people, livestock and crops. The three basic groups of biological agents which
would likely be used as weapons are bacteria, viruses, and toxins.
- Bacteria. Bacteria are small free-living organisms that reproduce
by simple division and are easy to grow. The diseases they produce often
respond to treatment with antibiotics.
- Viruses. Viruses are organisms which require living cells in which
to reproduce and are intimately dependent upon the body they infect. Viruses
produce diseases which generally do not respond to antibiotics. However,
antiviral drugs are sometimes effective.
- Toxins. Toxins are poisonous substances found in, and extracted
from, living plants, animals, or microorganisms; some toxins can be produced
or altered by chemical means. Some toxins can be treated with specific
antitoxins and selected drugs.
Most biological agents are difficult to grow and maintain. Many break down
quickly when exposed to sunlight and other environmental factors, while others
such as anthrax spores are very long lived. They can be dispersed by spraying
them in the air, or infecting animals which carry the disease to humans as well
through food and water contamination.
- Aerosols—Biological agents are dispersed into the air, forming a fine mist
that may drift for miles. Inhaling the agent may cause disease in people or
animals.
- Animals—Some diseases are spread by insects and animals, such as fleas,
mice, flies, and mosquitoes. Deliberately spreading diseases through livestock
is also referred to as agroterrorism.
- Food and water contamination—Some pathogenic organisms and toxins may
persist in food and water supplies. Most microbes can be killed, and toxins
deactivated, by cooking food and boiling water.
Anthrax spores formulated as a white powder were mailed to individuals in the
government and media in the fall of 2001. Postal sorting machines and the
opening of letters dispersed the spores as aerosols. Several deaths resulted.
The effect was to disrupt mail service and to cause a widespread fear of
handling delivered mail among the public.
Person-to-person spread of a few infectious agents is also possible. Humans
have been the source of infection for smallpox, plague, and the Lassa viruses.
What to do to prepare for a chemical or biological attack
- Assemble a disaster supply kit (see the “Emergency Planning and Disaster
Supplies” chapter for more information) and be sure to include:
- Battery-powered commercial radio with extra batteries.
- Non-perishable food and drinking water.
- Roll of duct tape and scissors.
- Plastic for doors, windows and vents for the room in which you will
shelter in place—this should be an internal room where you can block out air
that may contain hazardous chemical or biological agents. To save critical
time during an emergency, sheeting should be pre-measured and cut for each
opening.
- First aid kit.
- Sanitation supplies including soap, water and bleach.
What to do during a chemical or biological attack
- Listen to your radio for instructions from authorities such as whether to
remain inside or to evacuate.
- If you are instructed to remain in your home, the building where you are,
or other shelter during a chemical or biological attack:
- Turn off all ventilation, including furnaces, air conditioners, vents
and fans.
- Seek shelter in an internal room, preferably one without windows. Seal
the room with duct tape and plastic sheeting. Ten square feet of floor space
per person will provide sufficient air to prevent carbon dioxide build-up
for up to five hours. (See “Shelter” chapter.)
- Remain in protected areas where toxic vapors are reduced or eliminated,
and be sure to take your battery-operated radio with you.
- If you are caught in an unprotected area, you should:
- Attempt to get up-wind of the contaminated area.
- Attempt to find shelter as quickly as possible.
- Listen to your radio for official instructions.
What to do after a chemical attack
Immediate symptoms of exposure to chemical agents may include blurred vision,
eye irritation, difficulty breathing and nausea. A person affected by a chemical
or biological agent requires immediate attention by professional medical
personnel. If medical help is not immediately available, decontaminate yourself
and assist in decontaminating others. Decontamination is needed within minutes
of exposure to minimize health consequences. (However, you should not leave the
safety of a shelter to go outdoors to help others until authorities announce it
is safe to do so.)
- Use extreme caution when helping others who have been exposed to chemical
agents:
- Remove all clothing and other items in contact with the body.
Contaminated clothing normally removed over the head should be cut off to
avoid contact with the eyes, nose, and mouth. Put into a plastic bag if
possible. Decontaminate hands using soap and water. Remove eyeglasses or
contact lenses. Put glasses in a pan of household bleach to decontaminate.
- Remove all items in contact with the body.
- Flush eyes with lots of water.
- Gently wash face and hair with soap and water; then thoroughly rinse with
water.
- Decontaminate other body areas likely to have been contaminated. Blot (do
not swab or scrape) with a cloth soaked in soapy water and rinse with clear
water.
- Change into uncontaminated clothes. Clothing stored in drawers or closets
is likely to be uncontaminated.
- If possible, proceed to a medical facility for screening.
What to do after a biological attack
In many biological attacks, people will not know they have been exposed to an
agent. In such situations, the first evidence of an attack may be when you
notice symptoms of the disease caused by an agent exposure, and you should seek
immediate medical attention for treatment. In some situations, like the anthrax
letters sent in 2001, people may be alerted to a potential exposure. If this is
the case, pay close attention to all official warnings and instructions on how
to proceed. The delivery of medical services for a biological event may be
handled differently to respond to increased demand. Again, it will be important
for you to pay attention to official instructions via radio, television, and
emergency alert systems. If your skin or clothing comes in contact with a
visible, potentially infectious substance, you should remove and bag your
clothes and personal items and wash yourself with warm soapy water immediately.
Put on clean clothes and seek medical assistance. For more information, visit
the website for the Centers for Disease Control and Prevention, www.bt.cdc.gov.
Nuclear and Radiological Attack
Nuclear explosions can cause deadly effects—blinding light, intense heat
(thermal radiation), initial nuclear radiation, blast, fires started by the heat
pulse, and secondary fires caused by the destruction. They also produce
radioactive particles called fallout that can be carried by wind for hundreds of
miles.
Terrorist use of a radiological dispersion device (RDD)—often called ”dirty
nuke” or “dirty bomb”—is considered far more likely than use of a nuclear
device. These radiological weapons are a combination of conventional explosives
and radioactive material designed to scatter dangerous and sub-lethal amounts of
radioactive material over a general area. Such radiological weapons appeal to
terrorists because they require very little technical knowledge to build and
deploy compared to that of a nuclear device. Also, these radioactive materials,
used widely in medicine, agriculture, industry and research, are much more
readily available and easy to obtain compared to weapons grade uranium or
plutonium.
Terrorist use of a nuclear device would probably be limited to a single
smaller “suitcase” weapon. The strength of such a weapon would be in the range
of the bombs used during World War II. The nature of the effects would be the
same as a weapon delivered by an inter-continental missile, but the area and
severity of the effects would be significantly more limited.
There is no way of knowing how much warning time there would be before an
attack by a terrorist using a nuclear or radiological weapon. A surprise attack
remains a possibility.
The danger of a massive strategic nuclear attack on the United States
involving many weapons receded with the end of the Cold War. However, some
terrorists have been supported by nations that have nuclear weapons programs.
If there were threat of an attack from a hostile nation, people living near
potential targets could be advised to evacuate or they could decide on their own
to evacuate to an area not considered a likely target. Protection from
radioactive fallout would require taking shelter in an underground area, or in
the middle of a large building.
In general, potential targets include:
- Strategic missile sites and military bases.
- Centers of government such as Washington, D.C., and state capitals.
- Important transportation and communication centers.
- Manufacturing, industrial, technology and financial centers.
- Petroleum refineries, electrical power plants and chemical plants.
- Major ports and airfields.
Taking shelter during a nuclear attack is absolutely necessary. There are two
kinds of shelters—blast and fallout.
Blast shelters offer some protection against blast pressure, initial
radiation, heat and fire, but even a blast shelter could not withstand a direct
hit from a nuclear detonation.
Fallout shelters do not need to be specially constructed for that purpose.
They can be any protected space, provided that the walls and roof are thick and
dense enough to absorb the radiation given off by fallout particles. The three
protective factors of a fallout shelter are shielding, distance, and time.
- Shielding. The more heavy, dense materials—thick walls, concrete, bricks,
books and earth—between you and the fallout particles, the better.
- Distance. The more distance between you and the fallout particles, the
better. An underground area, such as a home or office building basement,
offers more protection than the first floor of a building. A floor near the
middle of a high-rise may be better, depending on what is nearby at that level
on which significant fallout particles would collect. Flat roofs collect
fallout particles so the top floor is not a good choice, nor is a floor
adjacent to a neighboring flat roof.
- Time. Fallout radiation loses its intensity fairly rapidly. In time, you
will be able to leave the fallout shelter. Radioactive fallout poses the
greatest threat to people during the first two weeks, by which time it has
declined to about 1% of its initial radiation level.
Remember that any protection, however temporary, is better than none at all,
and the more shielding, distance and time you can take advantage of, the better.
Electromagnetic pulse
In addition to other effects, a nuclear weapon detonated in or above the
earth’s atmosphere can create an electromagnetic pulse (EMP), a high-density
electrical field. EMP acts like a stroke of lightning but is stronger, faster
and briefer. EMP can seriously damage electronic devices connected to power
sources or antennas. This include communication systems, computers, electrical
appliances, and automobile or aircraft ignition systems. The damage could range
from a minor interruption to actual burnout of components. Most electronic
equipment within 1,000 miles of a high-altitude nuclear detonation could be
affected. Battery powered radios with short antennas generally would not be
affected.
Although EMP is unlikely to harm most people, it could harm those with
pacemakers or other implanted electronic devices.
What to do before a nuclear or radiological attack
- Learn the warning signals and all sources of warning used in your
community. Make sure you know what the signals are, what they mean, how they
will be used, and what you should do if you hear them.
- Assemble and maintain a disaster supply kit with food, water, medications,
fuel and personal items adequate for up to 2 weeks—the more the better. (See
the “Emergency Planning and Disaster Supplies” chapter for more information).
- Find out what public buildings in your community may have been designated
as fallout shelters. It may have been years ago, but start there, and learn
which buildings are still in use and could be designated as shelters again.
- Call your local emergency management office.
- Look for yellow and black fallout shelter signs on public buildings.
Note: With the end of the Cold War, many of the signs have been removed from
the buildings previously designated.
- If no noticeable or official designations have been made, make your own
list of potential shelters near your home, workplace and school: basements,
or the windowless center area of middle floors in high-rise buildings, as
well as subways and tunnels.
- Give your household clear instructions about where fallout shelters are
located and what actions to take in case of attack.
- If you live in an apartment building or high-rise, talk to the manager
about the safest place in the building for sheltering, and about providing for
building occupants until it is safe to go out.
- There are few public shelters in many suburban and rural areas. If you are
considering building a fallout shelter at home, keep the following in mind.
- A basement, or any underground area, is the best place to shelter from
fallout. Often, few major changes are needed, especially if the structure
has two or more stories and its basement—or one corner of it—is below
ground.
- Fallout shelters can be used for storage during non-emergency periods,
but only store things there that can be very quickly removed. (When they are
removed, dense, heavy items may be used to add to the shielding.)
- See the “Tornadoes” section in the “Thunderstorms” chapter for
information on the “Wind Safe Room,” which could be used as shelter in the
event of a nuclear detonation or for fallout protection, especially in a
home without a basement.
- All the items you will need for your stay need not be stocked inside the
shelter itself but can be stored elsewhere, as long as you can move them
quickly to the shelter.
- Learn about your community’s evacuation plans. Such plans may include
evacuation routes, relocation sites, how the public will be notified and
transportation options for people who do not own cars and those who have
special needs. See the “Evacuation” chapter for more information.
- Acquire other emergency preparedness booklets that you may need. See the
“For More Information” chapter at the end of this guide.
What to do during a nuclear or radiological attack
- Do not look at the flash or fireball—it can blind you.
- If you hear an attack warning:
- Take cover as quickly as you can, BELOW GROUND IF POSSIBLE, and stay
there unless instructed to do otherwise.
- If you are caught outside, unable to get inside immediately, take cover
behind anything that might offer protection. Lie flat on the ground and
cover your head.
- If the explosion is some distance away, it could take 30 seconds or more
for the blast wave to hit.
- Protect yourself from radioactive fallout. If you are close enough to see
the brilliant flash of a nuclear explosion, the fallout will arrive in about
20 minutes. Take shelter, even if you are many miles from ground
zero—radioactive fallout can be carried by the winds for hundreds of miles.
Remember the three protective factors: shielding, distance and time.
- Keep a battery-powered radio with you, and listen for official
information. Follow the instructions given. Local instructions should always
take precedence: officials on the ground know the local situation best.
What to do after a nuclear or radiological attack
In a public or home shelter:
- Do not leave the shelter until officials say it is safe. Follow their
instructions when leaving.
- If in a fallout shelter, stay in your shelter until local authorities tell
you it is permissible or advisable to leave. The length of your stay can range
from a day or two to four weeks.
- Contamination from a radiological dispersion device could affect a wide
area, depending on the amount of conventional explosives used, the quantity
of radioactive material and atmospheric conditions.
- A “suitcase” terrorist nuclear device detonated at or near ground level
would produce heavy fallout from the dirt and debris sucked up into the
mushroom cloud.
- A missile-delivered nuclear weapon from a hostile nation would probably
cause an explosion many times more powerful than a suitcase bomb, and
provide a greater cloud of radioactive fallout.
- The decay rate of the radioactive fallout would be the same, making it
necessary for those in the areas with highest radiation levels to remain in
shelter for up to a month.
- The heaviest fallout would be limited to the area at or downwind from
the explosion, and 80% of the fallout would occur during the first 24 hours.
- Because of these facts and the very limited number of weapons terrorists
could detonate, most of the country would not be affected by fallout.
- People in most of the areas that would be affected could be allowed to
come out of shelter and, if necessary, evacuate to unaffected areas within a
few days.
- Although it may be difficult, make every effort to maintain sanitary
conditions in your shelter space.
- Water and food may be scarce. Use them prudently but do not impose severe
rationing, especially for children, the ill or elderly.
- Cooperate with shelter managers. Living with many people in confined space
can be difficult and unpleasant.
Returning to your home
- Keep listening to the radio for news about what to do, where to go, and
places to avoid.
- If your home was within the range of a bomb’s shock wave, or you live in a
high-rise or other apartment building that experienced a non-nuclear
explosion, check first for any sign of collapse or damage, such as:
- toppling chimneys, falling bricks, collapsing walls, plaster falling
from ceilings.
- fallen light fixtures, pictures and mirrors.
- broken glass from windows.
- overturned bookcases, wall units or other fixtures.
- fires from broken chimneys.
- ruptured gas and electric lines.
- Immediately clean up spilled medicines, drugs, flammable liquids, and
other potentially hazardous materials.
- Listen to your battery-powered radio for instructions and information
about community services.
- Monitor the radio and your television for information on assistance that
may be provided. Local, state and federal governments and other organizations
will help meet emergency needs and help you recover from damage and losses.
- The danger may be aggravated by broken water mains and fallen power lines.
- If you turned gas, water and electricity off at the main valves and switch
before you went to shelter:
- Do not turn the gas back on. The gas company will turn it back on for
you or you will receive other instructions.
- Turn the water back on at the main valve only after you know the water
system is working and water is not contaminated.
- Turn electricity back on at the main switch only after you know the
wiring is undamaged in your home and the community electrical system is
functioning.
- Check to see that sewage lines are intact before using sanitary
facilities.
- Stay away from damaged areas.
- Stay away from areas marked “radiation hazard” or “HAZMAT.”
For more information relevant to terrorism consult the following chapters:
- The “Earthquakes” chapter for information about protecting yourself when a
building is shaking or unsafe and the Fire chapter for tips on fire safety.
- The “Hazardous Materials Incidents” chapter for information about sealing
a home.
- The “Emergency Planning and Disaster Supplies” chapter for information
about preparing a disaster supply kit.
- The “Shelter” chapter for measures regarding water purification.
- The “Evacuation” chapter for information about evacuation procedures.
- The “Recovering from Disaster” chapter for information about crisis
counseling.
Homeland Security Advisory System
The Homeland Security Advisory System was designed to provide a comprehensive
means to disseminate information regarding the risk of terrorist acts to
federal, state, and local authorities and to the American people. This system
provides warnings in the form of a set of graduated “Threat Conditions” that
increase as the risk of the threat increases. At each threat condition, federal
departments and agencies would implement a corresponding set of “Protective
Measures” to further reduce vulnerability or increase response capability during
a period of heightened alert.
Although the Homeland Security Advisory System is binding on the executive
branch, it is voluntary to other levels of government and the private sector.
There are five threat conditions, each identified by a description and
corresponding color.
The greater the risk of a terrorist attack, the higher the threat condition.
Risk includes both the probability of an attack occurring and its potential
gravity.
Threat conditions are assigned by the Attorney General in consultation with
the Assistant to the President for Homeland Security. Threat conditions may be
assigned for the entire nation, or they may be set for a particular geographic
area or industrial sector. Assigned threat conditions will be reviewed at
regular intervals to determine whether adjustments are warranted.
Threat Conditions and Associated Protective Measures
There is always a risk of a terrorist threat. Each threat condition assigns a
level of alert appropriate to the increasing risk of terrorist attacks. Beneath
each threat condition are some suggested protective measures that the government
and the public can take, recognizing that the heads of federal departments and
agencies are responsible for developing and implementing appropriate
agency-specific Protective Measures:
Low Condition (Green). This condition is declared when there is a low risk of
terrorist attacks. Federal departments and agencies will consider the following
protective measures.
- Refine and exercise prearranged protective measures;
- Ensure personnel receive proper training on the Homeland Security Advisory
System and specific prearranged department or agency protective measures; and
- Institute a process to assure that all facilities and regulated sectors
are regularly assessed for vulnerabilities to terrorist attacks, and all
reasonable measures are taken to mitigate these vulnerabilities.
Members of the public can:
- Develop a household disaster plan and assemble a disaster supply kit. (see
“Emergency Planning and Disaster Supplies” chapter).
Guarded Condition (Blue). This condition is declared when there is a general
risk of terrorist attacks. In addition to the measures taken in the previous
threat condition, federal departments and agencies will consider the following
protective measures:
- Check communications with designated emergency response or command
locations;
- Review and update emergency response procedures; and
- Provide the public with any information that would strengthen its ability
to act appropriately.
Members of the public, in addition to the actions taken for the previous
threat condition, can:
- Update their disaster supply kit;
- Review their household disaster plan;
- Hold a household meeting to discuss what members would do and how they
would communicate in the event of an incident;
- Develop a more detailed household communication plan;
- Apartment residents should discuss with building managers steps to be
taken during an emergency; and
- People with special needs should discuss their emergency plans with
friends, family or employers.
Elevated Condition (Yellow). An Elevated Condition is declared when there is
a significant risk of terrorist attacks. In addition to the measures taken in
the previous threat conditions, federal departments and agencies will consider
the following protective measures:
- Increase surveillance of critical locations;
- Coordinate emergency plans with nearby jurisdictions as appropriate;
- Assess whether the precise characteristics of the threat require the
further refinement of prearranged protective measures; and
- Implement, as appropriate, contingency and emergency response plans.
Members of the public, in addition to the actions taken for the previous
threat condition, can:
- Be observant of any suspicious activity and report it to authorities;
- Contact neighbors to discuss their plans and needs;
- Check with school officials to determine their plans for an emergency and
procedures to reunite children with parents and caregivers; and
- Update the household communication plan.
High Condition (Orange). A High Condition is declared when there is a high
risk of terrorist attacks. In addition to the measures taken in the previous
threat conditions, federal departments and agencies will consider the following
protective measures:
- Coordinate necessary security efforts with federal, state, and local law
enforcement agencies, National Guard or other security and armed forces;
- Take additional precautions at public events, possibly considering
alternative venues or even cancellation;
- Prepare to execute contingency procedures, such as moving to an alternate
site or dispersing the workforce; and
- Restrict access to a threatened facility to essential personnel only.
Members of the public, in addition to the actions taken for the previous
threat conditions, can:
- Review preparedness measures (including evacuation and sheltering) for
potential terrorist actions including chemical, biological, and radiological
attacks;
- Avoid high profile or symbolic locations; and
- Exercise caution when traveling.
Severe Condition (Red). A Severe Condition reflects a severe risk of
terrorist attacks. Under most circumstances, the protective measures for a
Severe Condition are not intended to be sustained for substantial periods of
time. In addition to the protective measures in the previous threat conditions,
federal departments and agencies also will consider the following general
measures:
- Increase or redirect personnel to address critical emergency needs;
- Assign emergency response personnel and pre-position and mobilize
specially trained teams or resources;
- Monitor, redirect, or constrain transportation systems; and
- Close public and government facilities not critical for continuity of
essential operations, especially public safety.
Members of the public, in addition to the actions taken for the previous
threat conditions, can:
- Avoid public gathering places such as sports arenas, holiday gatherings,
or other high risk locations;
- Follow official instructions about restrictions to normal activities;
- Contact employer to determine status of work;
- Listen to the radio and TV for possible advisories or warnings; and
- Prepare to take protective actions such as sheltering-in-place or
evacuation if instructed to do so by public officials.
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