True on the IRR vs. resigned commissioned. The 6-8 years has varied depending on "the needs of the service", it may well be 6, but shouldn't affect the OP.

I'd recommend taking a unit that first offers a spot and wrk out details. Hint: C-5 units have hurting for pilots since Jimmy Carter was President. Not sure why, it's relatively easy to stay current, the school is 12 weeks long, though and bases not all that commutable.

I just started collecting and the advantages of getting to 20 are pretty huge.

GF