I went out for a flight yesterday in a little C-172 and as I approached the run up area two A-10's were finishing their run up, then a T-38 taxied by to take off, I was third in line to take off behind them. Both of them absolutely dwarf a 172, I wanted to go find the farthest corner of the run-up area to hide so they wouldn't see me.
The back seat guy in the T-38 gave me a wave as he passed by, probably from a feeling of noblesse oblige.
But is pretty damn cool to watch them from such close range as they drop their canopies while lining up, then hear the roar as they open those throttles and take off.