For the Friday night-owls out there, here’s what Air Force fans need to know about this week’s Mountain West Conference showdown. Who, where, when: Hawaii (1-8, 0-6 MWC) at Air Force (5-5, 4-2 MWC), Friday, 7:30 p.m. Mountain time (9:30 p.m. Eastern, 4:30 p.m. Hawaii) TV: ESPN2 (Carter Blackburn and Rod Gilmore have the call) Gambling is illegal in most states: Air Force is a 22-point favorite. Must-win? The Falcons need one victory to secure bowl eligibility. If it doesn’t come this week, it’ll need to come Nov. 24 on the road against Fresno State (8-3, 6-1 MWC). The Falcons…