Columbia subject headings:
Bioterrorism--United States--Prevention.
Emergency management--United States.
Medical emergencies--United States.
Terrorism--United States--Prevention.
Harvard subject headings:
Bioterrorism--United States--Prevention
Emergency management--United States
Medical emergencies--United States.
Terrorism--United States--Prevention
Weapons of mass destruction
Princeton subject headings:
Bioterrorism--United States--Prevention.
Emergency management--United States.
Medical emergencies--United States.
Terrorism--United States--Prevention.