Paratroop,
Forget the pat down, beware of the food sniffing dogs. When I was going back overseas after a 15 day leave last year, I had packed four boxes of boy scout cookies in my assault pack. As I was trying to get on the plane in Dulles Airport, a drug sniffing dog spent a few anxious moments smelling by bag. I am not sure of the breed of this dog, but I am pretty sure that it must have been a Chocolate Lab.