Possible Clues:

• Baggage-scanning gp.
• Org. that confiscates water bottles
• Org. that scans luggage
• Luggage-screening gp.
• Airport uniform inits
• Hijack-prevention gp.
• Bag-inspecting org.
• Federal air marshals' org
• Org. screening carry-ons
• Airport org. with X-ray machines