Marines with Combat Logistics Regiment 25, 2nd Marine Logistics Group traverse the snow-covered Sierra Nevada Mountains during cold weather training at Marine Corps Mountain Warfare Training Center, Bridgeport, Calif., Jan. 28, 2018. Approximately 90 Marines participated in the week-long event where they learned survival skills, how to traverse mountainous terrain and cold weather weapons maintenance. The training will prepare the Marines for joint-force training exercise Artic Edge in northern Alaska, which will expose Marines to the peninsula’s weather extremes. (U.S. Marine Corps photo by Sgt. Brianna Gaudi) - Marines with Combat Logistics Regiment 25, 2nd Marine Logistics Group traverse the snow-covered Sierra Nevada Mountains during cold weather training at Marine Corps Mountain Warfare Training Center, Bridgeport, Calif., Jan. 28, 2018. Approximately 90 Marines participated in the week-long event where they learned survival skills, how to traverse mountainous terrain and cold weather weapons maintenance. The training will prepare the Marines for joint-force training exercise Artic Edge in northern Alaska, which will expose Marines to the peninsula’s weather extremes. (U.S. Marine Corps photo by Sgt. Brianna Gaudi)

Motor Transport Marines with 2nd Battalion, 6th Marine Regiment, and Combat Logistics Battalion 26, Headquarters Regiment, 2nd Marine Logistics Group, conduct a simulated convoy throughout the hills aboard Bridgeport, California, Jan. 14, 2015. The Marines learned how to operate the High Mobility Multipurpose Wheeled Vehicles and the small unit support vehicles in mountainous terrain during classroom instruction and practical application. (U.S. Marine Corps photo by Lance Cpl. Kaitlyn Klein/released) - Motor Transport Marines with 2nd Battalion, 6th Marine Regiment, and Combat Logistics Battalion 26, Headquarters Regiment, 2nd Marine Logistics Group, conduct a simulated convoy throughout the hills aboard Bridgeport, California, Jan. 14, 2015. The Marines learned how to operate the High Mobility Multipurpose Wheeled Vehicles and the small unit support vehicles in mountainous terrain during classroom instruction and practical application. (U.S. Marine Corps photo by Lance Cpl. Kaitlyn Klein/released)

Lance Cpl. Isaiah Holloman, a combat engineer with Combat Logistics Battalion 6, 2nd Marine Logistics Group, cuts into a tree with a chainsaw 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. Isaiah Holloman, a combat engineer with Combat Logistics Battalion 6, 2nd Marine Logistics Group, cuts into a tree with a chainsaw 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)

Staff Sgt. Omar Barroso, a mountain warfare instructor at Marine Corps Mountain Warfare Training Center Bridgeport, Calif., instructs Marines on the elements of a proper survival shelter Oct. 11, 2014. CLB-6 teamed up with 2nd Battalion, 5th Marine Regiment, 1st Marine Division for the monthlong 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) - Staff Sgt. Omar Barroso, a mountain warfare instructor at Marine Corps Mountain Warfare Training Center Bridgeport, Calif., instructs Marines on the elements of a proper survival shelter Oct. 11, 2014. CLB-6 teamed up with 2nd Battalion, 5th Marine Regiment, 1st Marine Division for the monthlong 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)