A newly released command investigation into the horrific mortar explosion last spring that killed seven Marines and wounded eight more concludes that the accident occurred when a Marine double-loaded rounds in a mortar tube. The March 18 explosion occurred while Marines with Alpha Company, 1st Battalion, 9th Marines, out of Camp Lejeune, N.C., were conducting nighttime live-fire training with 60-millimeter mortars at Hawthorne Army Depot, Nevada.
