AIR FORCE ACADEMY, Colo. — Chuckie Keeton matched his own school record by throwing for five touchdowns, including three in the third quarter, and Utah State routed Air Force 52-20 Saturday to give Aggies coach Matt Wells his first win in the school’s Mountain West Conference debut.Keeton completed 32 of 40 for 360 yards passing, the fifth time in seven games he has thrown for at least 300 yards dating to last season.