+1 to what Adlerdriver said. I've been a TR out of UPT (F-100) and seasoning time wasn't enough to get really MR then and it's orders if magnitude more difficult nowadays. Reserves typically have more money for man-days and heavies typically have a peacetime mission to pay for TRs to fly. Now, you might be delivering docs to the Ebola Belt, but it's flying time.
GF