As long as you have a big neck, you're good to go. There are still some sit/reach/height limits by aircraft, and also min/max weights for ejection seats but "they" will work around that at selection time or make you sign a waiver - a friend of mine had to sign one when she went to fly Harriers (after being found too short for the Prowler..she's 5' 1" on a tall day) acknowledging that the pyrotechnic canopy spreader would most likely jack up her back if (when?) she ejected. Weights for the other seats are based on stability (if you're too light) or 0/0 capability (too big). We also had some issues in the H-60 with short folks not being able to get full left pedal in (used a lot on the H-60 at the boat) when they had the seat set to allow for full range of motion of the cyclic (stick).

The big gotcha nowadays is the height/weight standards. See here http://www.usnavy.vt.edu/CurrentStud...%20Bodyfat.pdf for the instruction. Even though you may be in fantastic shape, you can still run afoul of the tape measure (I've got two guys in this predicament - they can pass the PFA just fine but they've got skinny necks!)

HTH
Spongebob