Columbia subject headings:
Airline passenger security screening--United States--Equipment and supplies.
Airports--Baggage handling--Security measures--United States.
Airports--Baggage handling--United States--Equipment and supplies.
Explosives--Detection--United States.
Terrorism--United States--Prevention.
Harvard subject headings:
Airline passenger security screening--United States--Equipment and supplies.
Airports--Baggage handling--Security measures--United States.
Airports--Baggage handling--United States--Equipment and supplies.
Explosives--Detection--United States.
Terrorism--United States--Prevention
Princeton subject headings:
Airline passenger security screening--United States--Equipment and supplies.
Airports--Baggage handling--Security measures--United States.
Airports--Baggage handling--United States--Equipment and supplies.
Explosives--Detection--United States.
Terrorism--United States--Prevention.