LANGLEY AIR FORCE BASE, Va -- Air Combat Command Chief Master Sgt. Martin Klukas does chest compression to resuscitate a simulated dummy patient during a base tour Aug. 10. The dummy provides doctors and nurses safe training for real life-threatening emergencies. Chief Klukas toured the base Aug. 9 and 10, interacting with the Airmen of all squadrons to better understand their work force and needs. (U.S. Air Force photo/Staff Sgt. Ashley Hawkins)(RELEASED)