The 633rd Civil Engineering Squadron Pest Management team separates mosquito samples into categorical species at Langley Air Force Base, Va., June 18, 2015. The Pest Management team controls the mosquito population at Langley to provide a healthier, more comfortable work environment for U.S. Air Force Airmen who work outside and on the flight line. (U.S. Air Force photo by Airman 1st Class Devin S. Michaels/Released)