Marines say two people suffered very serious wounds . The attack occurred at a checkpoint in the town of al-Hawl on Saturday morning. Unit was undergoing a live fire exercise at a mountain warfare training center . `` We are obviously in the early stages of assessing the incident , '' he said . The Hawthorne Army Depot is about 140 miles southeast of Reno , Nevada .
Marines say two people suffered very serious wounds . The attack occurred at a checkpoint in the town of al-Hawl on Saturday morning. Unit was undergoing a live fire exercise at a mountain warfare training center . The Hawthorne Army Depot is about 140 miles southeast of Reno , Nevada .