Party,
Under AFPS 75, 37 years is for airmen (whose pension accumulates from age 18) whereas for officers it is 34 years (as the pension only starts accumulating from age 21).
Interesting second order effects. Let's take a high flying aircrew gp capt, say stn cdr at 45 and gets offered promotion. Probably got a couple of kids at boarding school as he's followed the flag to be loyal. Now he's got a choice, become a one star with a smallish increase in pay but he could be kicked out after 2 years and CEA will disappear along with the salary; or he could sit on his backside, take it easy and have guaranteed employment to 60. Wonder how many will choose the latter...