Source: The Dallas Morning News 05/22/97 Contact: Marine kills man, 18, while on antidrug duty Officials say border shooting was selfdefense By Douglas Holt / The Dallas Morning News EL PASO Texas Rangers are investigating why a U.S. Marine on an antidrug mission in the Big Bend area fatally shot an 18yearold U.S. citizen, authorities said Wednesday. The shooting, which occurred near the border town of Redford about 6:15 p.m. Tuesday, was described by authorities as selfdefense. The young man was killed after he fired two shots with a .22caliber rifle at a fourperson team of Marines armed with M16 rifles, U.S. Border Patrol Mario Ortiz said.