SPS is one of a few of airports/bases that I've transited both the military and commercial sides
Oct 1977 I was on a Space-Available hop on a North American Aviation T-39 Sabreliner that was headed to Kirtland AFB (ABQ) ... the crew got re-routed in flight to take a general and a few members of his staff from SPS to Offutt AFB near Omaha ... I spent the night in the VOQ, and flew SPS-DFW-LAX the next morning on a Rio Airways Beech 99 and a Delta L-1011