I think that's a lot more likely, the same trips, than purely age. We often get TSA pre-check when we go to SXM on AA from Miami.. My mom is over 90 and she flies only occasionally, and she has never gotten TSA pre check. ...now I have to tell you though that she reported to me one time the TSA guy let her keep her bottle of water because she said she needed it for her pills!!! Could have knocked me over with a feather!!!