AIR FORCE ACADEMY, Colo. — Calvin Tyler Jr. raced 61 yards for the go-ahead touchdown with just under four minutes to play to lift Utah State to a 49-45 win over Air Force in the Mountain West Conference opener Saturday night. The Aggies, who had just one win a year ago, won their third straight game to open the season for the first time since 1978. Tyler carried 19 times for 132 yards and two touchdowns to lead Utah State while Logan Bonner completed 21 of 34 passes for 253 yards and two touchdowns.