ANNAPOLIS, Md. (AP) _ Air Force scored 39 points in the second half Saturday, including touchdowns of 7 and 12 yards by Jason Jones, to defeat Navy 46-6, the widest margin in the history of the service academy rivalry.

Navy (0-5) shut down the potent Air Force wishbone running attack for most of the first half and entered halftime trailing by one, 7-6. But the Falcons (6-1 and 4-1 in the Western Athletic Conference) took advantage of short Navy punts, a fumble recovery and two pass interceptions to score on four of five possessions in the second half.

The longest drive during that stretch was a 45-yarder that ended with a 27- yard field goal by Joe Wood. The Falcons also scored touchdowns on drives of 21, 33 and 34 yards.

Air Force added two more touchdowns behind backup quarterbacks Jarvis Baker and Scott Tiegen late in the game.

The victory was the 10th straight for the Falcons over Navy. The 46 points was the most scored by either team in the 24-year history of the rivalry.

The Midshipmen, seeking to put some punch into an offense that had scored only 60 points in four games, started a new quarterback, freshman James Kubiak.

Kubiak, suiting up for his first varsity game, got off to an auspicious start, completing passes for 9 and 12 yards on the first two plays of the game.

But Kubiak and the Midshipmen had little success moving the ball against the Air Force defense after that. The only Navy touchdown, which put the Midshipmen ahead 6-0, came on a 21-yard drive following the interception of a pass from quarterback Rob Perez midway through the first quarter.

Air Force took its halftime lead on a 54-yard scoring drive. Fourteen straight running plays, most of them up the middle, gave the Falcons the touchdown.