Marines with Weapons Company, 1st Battalion, 24th Marines, 25th Marine Regiment, 4th Marine Division, navigate the route to their next checkpoint during the final exercise of exercise Nordic Frost on Camp Ethan Allen Training Site in Jericho, Vt., Jan. 22, 2018. The exercise allowed Marines to demonstrate their ability to operate in a cold weather mountainous environment, conducting land navigation, marksmanship training, demolitions, call for fire training and other core competencies. (U.S. Marine Corps photo by Pfc. Samantha Schwoch/released) - Marines with Weapons Company, 1st Battalion, 24th Marines, 25th Marine Regiment, 4th Marine Division, navigate the route to their next checkpoint during the final exercise of exercise Nordic Frost on Camp Ethan Allen Training Site in Jericho, Vt., Jan. 22, 2018. The exercise allowed Marines to demonstrate their ability to operate in a cold weather mountainous environment, conducting land navigation, marksmanship training, demolitions, call for fire training and other core competencies. (U.S. Marine Corps photo by Pfc. Samantha Schwoch/released)

Lance Cpl. Joshua D, Burson, ground radio repair-man, Headquarters and Service Company, 3rd Battalion, 25th Marine Regiment, 4th Marine Division, low crawls during a Marine Corps Martial Arts Program course while at exercise Nordic Frost at Camp Ethan Allen Training Site in Jericho, Vt., Jan. 8. 2017. Marines were provided the opportunity to obtain their grey or green belts during the exercise. (U.S. Marine Corps photo by Cpl. Melissa Martens/ Released) - Lance Cpl. Joshua D, Burson, ground radio repair-man, Headquarters and Service Company, 3rd Battalion, 25th Marine Regiment, 4th Marine Division, low crawls during a Marine Corps Martial Arts Program course while at exercise Nordic Frost at Camp Ethan Allen Training Site in Jericho, Vt., Jan. 8. 2017. Marines were provided the opportunity to obtain their grey or green belts during the exercise. (U.S. Marine Corps photo by Cpl. Melissa Martens/ Released)