Columbia subject headings:
Intelligence service--United States--Evaluation.
Military intelligence--United States--Evaluation.
National security--United States.
September 11 Terrorist Attacks, 2001.
Terrorism--Government policy--United States.
Terrorism--United States--Prevention.
Harvard subject headings:
Intelligence service--United States--Evaluation
Military intelligence--United States--Evaluation.
National security--United States
September 11 Terrorist Attacks, 2001
Terrorism--Government policy--United States
Terrorism--United States--Prevention
Princeton subject headings:
Intelligence service--United States--Evaluation.
Military intelligence--United States--Evaluation.
National security--United States.
September 11 Terrorist Attacks, 2001.
Terrorism--Government policy--United States.
Terrorism--United States--Prevention.