Print WASHINGTON - The Marine Corps has launched a new investigation into an amphibious task force at the center of a disaster off the coast of San Diego last year that killed nine U.S. troops, service officials said, opening the possibility for additional discipline for officers involved. A board of officers will review the formation of the 15th Marine Expeditionary Unit, of Camp Pendleton, Calif., with Lt. Gen. Carl Mundy serving as board president, the service said in a statement. “The investigation will inquire into the formation of the 15th MEU; training and material readiness impacting the formation of the 15th MEU; and higher headquarters oversight of the 15th MEU,” the service said. “The goal is to ensure the Marine Corps is doing everything possible to prevent this type of mishap from happening again.”