He was in the military as a radioman during WWII but was never a pilot. He tells everyone he flew B47's; and helicopters during Katrina. (He did take private heli lessons when he was 45 and maintained a private pilot's license for small planes since age 20). It's very embarrassing for me in public as he seems to truly believe this. I am his live-in full time caregiver and can't stand to be in the same room with him. I am his eldest retired child. Do you think he's just mixed up or is this a first sign of dementia or Alzheimer's?