My favorite was when I was travelling TDY in uniform and got tagged with the dreaded SSS code in the ticket ("Special Screening Stuff" is what I declared it to mean). I never faulted the TSA folks - they're just doing their job - but it was hilarious to sometimes have a twenty-something complaining about profiling while waiting for the extra screening and bag search, only to point out that he was complaining to a Soldier in uniform who was invariably standing next to an eighty year old woman.