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Terrorism is the use of force or violence against persons or property in violation of the criminal laws for purposes of intimidation, coercion, or ransom
A chemical emergency occurs when a hazardous chemical has been released and the release has the potential for harming people's health. Chemical releases can be unintentional, as in the case of an industrial accident, or intentional, as in the case of a terrorist attack.
A bioterrorism attack is the deliberate release of viruses, bacteria, or other germs (agents) used to cause illness or death in people, animals, or plants. These agents are typically found in nature, but it is possible that they could be changed to increase their ability to cause disease, make them resistant to current medicines, or to increase their ability to be spread into the environment.
Radiation is a form of energy that is present all around us. Different types of radiation exist, some of which have more energy than others. Amounts of radiation released into the environment are measured in units called curies. However, the dose of radiation that a person receives is measured in units called rem.
A pandemic is a global disease outbreak. An influenza pandemic occurs when a new influenza virus emerges for which there is little or no immunity in the human population and the virus begins to cause serious illness and then spreads easily person-to-person worldwide.
When the event, or series of events, causes a lot of stress, it is called a traumatic event. Traumatic events are marked by a sense of horror, helplessness, serious injury, or the threat of serious injury or death. Traumatic events affect survivors, rescue workers, and the friends and relatives of victims who have been involved