Meanwhile, for 2017 about 23.2% of all USAF officers were from USAFA, while there were 19.8% CanoeUers in the Navy and 15.7% Westpointers in the Army. Given that USAF unlike the other services has fourth main commissioning flow (through ANG), what is the reason USAFA seems to be the most prestigious of all Service Academies of US of A?