Master Sgt. Mark Stocking, a boom operator from the 506th Expeditionary Air Refueling Squadron, briefs members of the 36th Medical Group during a KC-135 Stratotanker incentive flight over Guam Oct. 11. The flight served as an opportunity for flight crew and medical personnel to interact with each other during mid-air refuelings. (U.S. Air Force photo by Airman 1st Class Mariah Haddenham/Released)