One Air Force officer is hoping hours in the gym each day could mean a trip to the NFL Combine — and the revival of a dream to play pro ball. Aaron Kirchoff, a 2009 graduate of the Academy, is a second lieutenant with the 50th Comptroller Squadron at Schriever Air Force Base, Colo. He said the idea of playing in the NFL after school “wasn’t even a question. You weren’t even asked if you were training for the combine.” But watching a couple of a former teammate surviving the cut in the NFL made Kirchoff think big. Chad Hall,…