Airmen 1st Class Joseph Kline (left) and Christopher Simmons, 100th Security Forces Squadron gunners, provide security of incoming traffic for “Forward Operating Base Oakwood” at Guardian 1, Stanford Training Area, Thetford, Sept. 4, 2012. Members from the 100th SFS manned several towers around the FOB during a joint mission rehearsal exercise, also known as MRX,with Royal Air Force members from 15 Squadron, RAF Honington; No. 2 Tactical Police Squadron, RAF Henlow; and No. 7 Force Protection Wing Headquarters, RAF Coningsby. During the MRX, U.S. Air Force members played as U.S. Marine Corps for the British forces, who are scheduled to deploy to Afghanistan in the near future. (U.S. Air Force photo/Karen Abeyasekere)