Four Marines Killed Clearing Training Area At Camp Pendleton

(Camp Pendleton, CA) -- Four Marines are dead in a training accident at Camp Pendleton in Southern California. Base officials say the Marines were killed as they were clearing a training area of obstructions on the base, but have declined to go into further details. Marine officials won't say whether the incident involved the detonation of unexploded devices, but say the operation could have involved handling such devices. An investigation is underway.