Four U.S. Marines died in an accident at Camp Pendleton. The fatalities happened about 11 A.M. Wednesday during a maintenance operation at the base north of Oceanside. Camp Pendleton Commanding General Brig. Gen. John W. Bullard said, "We offer our heartfelt prayers and condolences to the families of the Marines lost today in this tragic accident. Our first priority is to provide the families with the support they need during this difficult time."