U.S. Air Force Col. Christopher Brooks, U.S. Delegation Chief, and other volunteers serve food during a dinner hosted by U.S. service members at Combined Endeavor 2012 on Grafenwoehr, Germany, Sept. 19. The dinner included food, music and entertainment from the American culture. It also provided service members a chance to establish and build on the human interoperability between partner nations. CE12 is a multinational command, control, communications and computer systems exercise designed to build and enhance communications and network interoperability between 41 nations and multinational organizations.