Airman 1st Class Michael Diaz, 4th Special Operations Squadron aircrew flight equipment technician, fits Acting Secretary of the Air Force Eric Fanning’s oxygen mask prior to flying on a CV-22 Osprey and AC-130U Spooky at Hurlburt Field Fla., Sept. 9, 2013. The visit is part of Fanning’s familiarization with various Air Force missions since becoming the acting secretary.