Columbia subject headings:
Emergency management--Washington Metropolitan Area--Evaluation.
Incident command systems--Washington Metropolitan Area--Evaluation.
Terrorism--Washington Metropolitan Area--Prevention.
Harvard subject headings:
Emergency management--Washington Metropolitan Area--Evaluation.
Incident command systems--Washington Metropolitan Area--Evaluation.
Terrorism--Washington Metropolitan Area--Prevention.
Princeton subject headings:
Emergency management--Washington Metropolitan Area--Evaluation.
Incident command systems--Washington Metropolitan Area--Evaluation.
Terrorism--Washington Metropolitan Area--Prevention.