That reminds me - one day I was in line at Costco, and the guy in front of me was wearing an Army veteran cap. We started chatting, and I mentioned to him that I served in the Air Force. He said "Air Force - is that a branch of the military?" I replied without pause "Oh yeah, it's a branch of the military, it's like the Army but it's for smart people". He got quite the chuckle out of that. Who doesn't enjoy the friendly inter-service rivalry.