Air Force Master Sgt. Justin Mullins, left, and Jeremy Ybarra run during the deployed Air Force Marathon at Bagram Airfield, Afghanistan, Sept. 16, 2017. Mullins is the first sergeant assigned to the 455th Expeditionary Aircraft Maintenance Squadron. Ybarra is a fuels management specialist assigned to the 455th Expeditionary Aircraft Maintenance Squadron. The marathon was held during the week of the Air Force's 70th birthday. Air Force photo by Staff Sgt. Benjamin Gonsier