Ditto all the other advice so far. I didn't get into USAFA SS or NASS (I did get into SLE), and I ended up getting appointed to both USNA and USAFA (I didn't apply to WP at all). I applied with a 1470 SAT, straight As, community service, clubs, and all the other usual stuff - I also am a minority and live nowhere near any of the SAs. Just remember that selection for NASS, SLE, and USAFA SS are not really based on you as a person, but more on your demographic and who WP/the SA is looking for. I even used the same exact essay from my USAFA SS application for my actual USAFA application, and I ended up with an appointment. I know it definitely sucks at the moment (I also felt down about not getting into NASS or SS) but it really has no bearing on your application at all. Keep your head up and good luck!