U.S. Air Force Staff Sgt. Bradley Hutchison, 757th Airlift Squadron aerial spray team technician, assists in engine start-up during a mosquito spraying mission at Joint Base Langley-Eustis, Va., Aug. 1, 2017. With support from the 757th AS, Langley Air Force Base senior leaders are ensuring disease transmitting species are not given the chance to impact Airmen’s ability to support the warfighting mission. (U.S. Air Force photo/Staff Sgt. Carlin Leslie)