Lance Cpl. Trent Eguia (right), a combat engineer with Combat Logistics Battalion 6, 2nd Marine Logistics Group, and mountain warfare instructor Staff Sgt. Joshua Buck, watch as a tree falls to the ground during tree-felling training at Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Oct. 18, 2014. CLB-6 teamed up with 2nd Battalion, 5th Marine Regiment, 1st Marine Division, for the month-long Summer Mountain Warfare Exercise, where they were taught survival skills in the Sierra Nevada Mountains. The training package helps to ensure the readiness and relevance of 2nd MLG forces to be employed in support of combatant command requirements. (U.S. Marine Corps photo by Lance Cpl. Preston McDonald/Released) - Lance Cpl. Trent Eguia (right), a combat engineer with Combat Logistics Battalion 6, 2nd Marine Logistics Group, and mountain warfare instructor Staff Sgt. Joshua Buck, watch as a tree falls to the ground during tree-felling training at Marine Corps Mountain Warfare Training Center Bridgeport, Calif., Oct. 18, 2014. CLB-6 teamed up with 2nd Battalion, 5th Marine Regiment, 1st Marine Division, for the month-long Summer Mountain Warfare Exercise, where they were taught survival skills in the Sierra Nevada Mountains. The training package helps to ensure the readiness and relevance of 2nd MLG forces to be employed in support of combatant command requirements. (U.S. Marine Corps photo by Lance Cpl. Preston McDonald/Released)