BALTIMORE — Army ended a 14-year run of frustration against Navy, using an overpowering running game and opportunistic defense to carve out a long overdue 21-17 victory Saturday. With future commander in chief Donald Trump looking on, the Black Knights blew a 14-point lead before quarterback Ahmad Bradshaw scored on a 9-yard run with 6:42 left to give Army the win it had been waiting for since 2001. The Black Knights’ 14-game losing streak was the longest by either academy in a series that began in 1890.