U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)

U.S., Allied, and partner-nation Soldiers from nine countries participate in the Cold Regions Military Collaborative Training Event at Arctic Valley in Joint Base Elmendorf-Richardson, Alaska, Feb. 22, 2018. The U.S. Army Alaska hosted event focused on strengthening relationships among allied and partner nations with experience operating in cold weather, and at high elevations; and set conditions for future collaboration. (Photo by Justin Connaher)