Marines breach and clear a building during exercise Nordic Frost at Camp Ethan Allen Training Site in Jericho, Vt., Jan. 19, 2018. The exercise enabled Marines to demonstrate their ability to conduct tasks and perform skills in a cold, mountainous environment. The Marines are assigned to the 4th Marine Division's Echo Company, 4th Combat Engineer Battalion, 25th Marine Regiment. Marine Corps photo by Pfc. Samantha Schwoch