CAMP LEJEUNE, N.C. -- As the leadership of the 2nd Marine Expeditionary Force changed hands, the departing and incoming commanders said they believe an investigation into accusations that U.S. Marines deliberately shot civilians in Haditha, Iraq, will ultimately strengthen the corps. Lt. Gen. Keith Stalder took command of the Camp Lejeune-based group on Wednesday from Lt. Gen. James Amos, who is headed to the Pentagon to become deputy commandant in charge of combat development. "We don't know the facts on Haditha, let alone what the facts mean at this point," said Stalder. "We do owe it to the American people...