So I recently got picked up by a predator unit to be commissioned and go through the Full UPT. That said, I was working as a F-16 avionics tech for a sister unit prior to that. There was a requirement that you had to be enlisted and in the ANG from the state my opportunity came from. Myself and another guy were the first from our unit to receive a deserving airman commissioning into a pilot spot. So there are opportunities out there but they are very competitive and I think for the most part you have to be in the guard already.
On a separate note at my flight physical I met a guy that went from student flight to F22 pilot candidate. Luck dude.