Lance Cpl. Daniel Warren, rifleman, Company C, 3rd Light Armored Reconnaissance Battalion, provides security in the Blacktop training area as part of the defensive portion of 7th Marine Regiment’s Combined Arms Live Fire Exercise aboard the Combat Center April 6, 2016. CALFEX served as the kinetic portion of Desert Scimitar 16, an annual 1st Marine Division training evolution. (Official Marine Corps photo by Cpl. Julio McGraw/ Released) - Lance Cpl. Daniel Warren, rifleman, Company C, 3rd Light Armored Reconnaissance Battalion, provides security in the Blacktop training area as part of the defensive portion of 7th Marine Regiment’s Combined Arms Live Fire Exercise aboard the Combat Center April 6, 2016. CALFEX served as the kinetic portion of Desert Scimitar 16, an annual 1st Marine Division training evolution. (Official Marine Corps photo by Cpl. Julio McGraw/ Released)