That may be how the Navy does it, but that is not how the Air Force works.

Roughly 40% of pilot slots go to USAFA grads, each year.  Another  40-ish percent go to AFROTC grads.  The remainder are OTS slots. 

Currently, USAFA gets about 500 pilot slots per year.  Since not every cadet can pass a class 1 flight physical, and some don't want to fly,  most cadets who want to fly can get a pilot slot.  (This might change with the shift toward UAVs, but we don't know when/how.)