48th Security Forces Squadron Train on Air Base Defense Published April 7, 2009 By Airman 1st Class Perry Aston 48th Fighter Wing Public Affairs ROYAL AIR FORCE FELTWELL, England -- ROYAL AIR FORCE FELTWELL, England -- Staff Sgt. Norman Heffle, 48th Security Forces Squadron, defends the entry control point from simulate base attackers here April 2, 2009. Airmen from the 48th SFS participated in an air base defense exercise. The training is an annual requirement for the squadron. (U.S. Air Force photo by Airman 1st Class Perry Aston)