You’re standing alone minding your own business in a public queue. Suddenly strangers approach and strike up a conversation. Bored Type A’s with diarrhea of the mouth? Road warriors with too many drinks at the SC? Or worse, Undercover Al Kidda Terrorists trying to talk you into carrying their package onto your plane?

An ordinary day in the airport? No, you have entered the “DHS Zone.” Your only way out? “If you see something, say something.” Scream loudly while you still can for the nearest law enforcement officer to report these strangers who are “terrorizing” you. Or, keep silent, take your chances, and enter: “The TSA Zone. . . .”