What Air Force fans need to know as the Falcons begin Mountain West Conference play. Who, where, when: Air Force (1-1, 0-0 MWC) at UNLV (0-3, 0-0 MWC), Saturday, 10 p.m. Eastern. TV: Altitude (check here to see if it’s available in your area; Barry Tompkins and Jay Leeuwenberg have the call) Gambling is illegal in most states (but not Nevada): Air Force is a 10.5-point favorite. Comforts of home?: This will be UNLV’s fourth-straight home game to open the season. They’ve loss all by eight points or less, including last week’s 35-27 defeat at the hands of Washington State.…