My son has autism and we are concerned that he might have problems with TSA behavioral profiling. He is flying home for the holidays in two weeks. He is high functioning, able to hold down a job and live independently. However, he has problems with eye contact and small talk, especially with people he doesn't know. What might TSA do if he doesn't make eye contact and is reluctant to do small talk? Will they let him on the plane without undergoing an extensive security search? Would it be best to carry a note from a doctor explaining the situation?