Fighter Pilots?

Bush was a (sort of) fighter pilot. McCain was a fighter pilot. Both have shown themselves to be foul-mouthed heavy drinkers, impulsive and nasty-tempered. McCain was/is a skirt-chaser.
Is there something about the macho mentality that goes into this kind of thing?
Except both came from prominent families and got into being fighter pilots through their dad’s influence and not through the normal channels…