A furnace warms a tent while a U.S. Marine Corps Medium Tactical Vehicle Replacement attached to the 2nd Supply Battalion, Combat Logistics Regiment 25, 2nd Marine Logistics Group sits in a snowstorm during Cold Response 14 in Elvegaardsmoen, Norway, March 14, 2014. Cold Response is a Norwegian-led exercise to rehearse high-intensity operations in winter conditions. Participants are from 15 NATO nations with the largest group of participants coming from the United States, Canada, France, the Netherlands, Great Britain and Sweden.