Albanian soldiers react to rioters, role played by U.S. Soldiers with the 1st Battalion, 4th Infantry Regiment, during the Kosovo Force (KFOR) 18 Mission Rehearsal Exercise (MRE) at the Hohenfels Training Area in Germany Jan. 19, 2014. The KFOR 18 MRE was designed to prepare the U.S. Army's 504th Battlefield Surveillance Brigade and multinational forces for operations in support of NATO in Kosovo.