Marine Cpl. Melroy Cort lost his legs fighting for his country in Iraq. He and his wife were driving to Walter Reed Army Medical Center when he was arrested on a felony possession of a firearm. He says an Ohio permit for his pistol, and had been told by his commanding officer to store the gun at the Walter Reed armory upon arrival. The public defender wanted him to plead guilty, but he refused because he was worried that a felony conviction would endanger his military benefits. So he defended himself -- and yesterday was acquitted.