I'm serving in the Air Force Reserve right now, and I have to say that is one of the best experiences of my life. The camaderie is very strong and everyone I know in my unit is hard working and dedicated, with the exception of about two slackers. I don't know about the whole calling officers by their first name. In my entire career, I never addressed an officer by his or her first name. Every branch has their pros and cons. Regardless of whichever branch you choose, make sure it's the right one for you. In my case, I'm glad I made the decision to join the Air Force. It's one of the best decisions I ever made. Go blue!