LANGLEY AIR FORCE BASE, Va. – Airman 1st Class Corie Flores, 633d Security Forces Squadron installation entry controller, performs chest compressions 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)