Mitchel Burcham, 633rd Civil Engineering Squadron Pest Management technician, looks through a microscope at Langley Air Force Base, Va., June 18, 2015. Burcham looks for the Culex, Aedes and Anopheles species of mosquito, because they have the potential to carry disease factors for the West Nile and Eastern equine encephalitis viruses. (U.S. Air Force photo by Airman 1st Class Devin S. Michaels/Released)