LANGLEY AIR FORCE BASE, Va. – Staff Sgt. Frank Ritz, 633d Security Forces Squadron response force patrolman, looks, listens and feels for breathing and circulation on a training dummy during a CPR class Jan. 27. The CPR certification class was part of the Squadron’s month-long training course, which included classes on integrated defense, self-aid and buddy care and active-shooter scenarios. (U.S. Air Force photo/Staff Sgt. Logan Tuttle)(RELEASED)