U.S. Marines with the 2nd Supply Battalion, Combat Logistics Regiment 25, 2nd Marine Logistics Group open obsolete crates before repacking the stored equipment into more space-efficient casings March 7, 2014, in Tromsdal, Norway, in preparation for exercise Cold Response 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.