What Navy fans need to know as the Mids do something the Navy’s been pretty good at — fight Pirates. Who, where, when: Navy (4-3) at East Carolina (5-3, 4-1 Conference USA), Saturday, 3:30 p.m. TV: Fox College Sports Atlantic (Adam Alexander and Gary Reasons have the call; check here to see if you can tune in). Gambling is illegal in most states: East Carolina is a 3.5-point favorite. Revenge game: Navy missed a game-tying field goal with eight seconds to play as the Pirates wrecked homecoming last year with a 38-35 win in Annapolis. Quarterback Trey Miller, subbing for…