A Dutch soldier pulls security during an attack in an urban environment during Exercise Allied Spirit I at the Hohenfels Training Area, Germany, Jan. 20, 2015. Exercise Allied Spirit includes more than 2,000 participants from Canada, Hungary, Netherlands, United Kingdom, and the United States. Allied Spirit is exercising tactical interoperability and testing secure communications among Alliance members. (U.S. Army photo by Visual Information Specialist Markus Rauchenberger/released)