U.S. Airmen assigned to the 435th Contingency Response Group, 435th Air Ground Operations Wing, Ramstein Air Base, Germany, build a Tent Model 60 during exercise Contested Forge on Grostenquin Air Base, France, Dec. 3, 2018. Contested Forge is an annual exercise that tests the 435th CRG's ability to build a forward operating base and conduct airfield operations in an austere environment, friendly or hostile. (U.S. Air Force photo by Staff Sgt. Timothy Moore)