My grandfather was flying P-47 missions in the Pacific at 21 yrs old. He finished up as O-6 with over 10,000 military flight hours. He passed a way at age 86 a few years ago, but was able to play golf with me and my Dad just 3 weeks earlier. Every time I think I'm cool for being a fighter pilot, I think about my old man's pop and what he was doing at my respective age. He's outpaced me every step of the way.