Because the Air Force actually wants their pilots to hear about and learn from their mishaps. That way (ideally) they won't happen again.
The Navy/Marine Corps has adopted a form of "Top Secret/Cone of Silence" mentality to anything and everything related to all of our mishaps.
You'll also notice that the Air Force writes their reports in plain English as opposed to the idiotic all-caps/coded message style format that we use (as if it were translated from Morse code on some 1940's communication center).
We had a thread about this before. Bottom line (IMHO), the Safety Center cares more about privacy and secrecy than they do about getting the word out on the causes of mishaps. That leads to rampant rumors (which the ASO brownshirts try valiantly to stamp out) and a lot of folks wondering what, if anything, is wrong with their aircraft or procedures that might someday kill them.
The Air Force knows those answers and makes sure that they get the word out. Look at their mishap rate and tell me how bad it's screwing them.
I'm not sure this is a (Air Force version) SIR. This may be their JAGMAN. The Air Force is actually even more anal about privilege than the Navy, at least during the investigation process.