ELLSWORTH AIR FORCE BASE, S.D. - (Right) Senior Airman Marc Lane, 28th Bomb Wing still photographic journeyman, performs chest compressions on a dummy while Tech. Sgt. Kathy Gatzke, 28th Force Support Squadron fitness center NCO in-charge, prepares an automated external defibrillator for use during a heart saver certification course, April 20. The course has various scenarios to reinforce the cardio pulmonary resuscitation and AED instructions. (U.S. Air Force photo/Airman 1st Class Matthew Flynn