I agree you should at least call and find out. Some units only hire rated folks (current pilots of the airframe, basically), some hire new people (UPT slots). However, the atmosphere with the Reserve/Guard is ridiculous nowadays, I know because I've been calling my a$$ off and most of the units are handling hiring more conservatively now (that or they're giving me the guano cause I'm not in-house?)
At any rate, what hdodo was referring to were the options that you have to meet the HQ board, which is held twice a year. Your application package can either be submitted as 'sponsored' or 'unsponsored'. Sponsored is the way to go; the HQ board is, for the most part, a formality when you have been sponsored by a unit. When you're not, you're back to the 1% chance game and the chances of being selected drastically decrease. Not because your package is not strong, but because you have to compete with others and the unsponsored slots are extremely limited, compared to the majority of sponsored folks, who WILL get approved.
From my experience this year, units are actually encouraging me to go unsponsored, asserting that if approved by the board you will then become a 'free agent' of sorts and Robins (AFRC HQ) lets the units know that you exist, as they can fill their short-notice manning needs with the unsponsored candidates. Seems SOMEWHAT of sound advice considering the BRAC has taken a bat to the hornet's nest and people (particularly rated folks) are shuffling around for prospective new homes, which means lean times (for a change right?) for the UPT hopeful. But then you realize what it is that being unsponsored entails, and realize you're not getting that great of news. Like I mentioned before, call them up and ask what their hiring status is, that way you clear your options quicker.
Positions like the one rod_farva presents are becoming common in the Reserves and that's really discouraging.