Columbia subject headings:
Communication in law enforcement--United States.
Information technology--Government policy--United States.
Interagency coordination--United States.
Terrorism--United States--Prevention--Information services.
United States. Dept. of Homeland Security--Communication systems.
United States. Dept. of Homeland Security--Information resources management.
Harvard subject headings:
Communication in law enforcement--United States.
Information technology--Government policy--United States
Interagency coordination--United States
Terrorism--United States--Prevention--Information services.
United States. Department of Homeland Security--Communication systems.
United States. Department of Homeland Security--Information resources management.
Princeton subject headings:
Communication in law enforcement--United States.
Information technology--Government policy--United States.
Interagency coordination--United States.
Terrorism--United States--Prevention--Information services.
United States. Department of Homeland Security--Communication systems.
United States. Department of Homeland Security--Information resources management.