U.S. Marine Corps Staff Sgt. Caleb Hall delivers the safety brief before conducting small arms fire drills on Camp Leatherneck in Helmand province, Afghanistan, June 28, 2013. Hall is assigned to the 215th Afghan National Army Mobile Strike Force Security Force Assistance Advisor Team. U.S. Marine Corps Staff Sgt. Caleb Hall delivers the safety brief before conducting small arms fire drills on Camp Leatherneck in Helmand province, Afghanistan, June 28, 2013. Hall is assigned to the 215th Afghan National Army Mobile Strike Force Security Force Assistance Advisor Team. SHARE: Download: Full Size (2.95 MB) Tags: Photo Essays Credit: VIRIN: 138649-I-UGB40-135.jpg Photo Gallery