Peter Neffenger, Transportation Safety Administration administrator, thanks Senior Airman Bryan MacLean, 436th Maintenance Squadron crew chief, at a ceremony Sept. 4, 2015, at the Philadelphia International Airport. On July 29, 2015, MacLean provided life-saving medical attention, CPR and automatic external defibrillator (AED), to George Senkler who suffered a heart attack while he was processing through a TSA security checkpoint. (Courtesy photo)
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