Mitchel Burcham, 633rd Civil Engineering Squadron Pest Management technician, looks at mosquito samples through a microscope at Langley Air Force Base, Va., June 18, 2015. After collecting samples from the field, technicians search for disease factors related to the West Nile and Eastern Equine encephalitis viruses. (U.S. Air Force photo by Airman 1st Class Devin S. Michaels/Released)

Mitchel Burcham, 633rd Civil Engineering Squadron Pest Management technician, picks up a mosquito at Langley Air Force Base, Va., June 18, 2015. The Pest Control technicians ensure there has been no recent evidence of the West Nile or Eastern equine encephalitis viruses among the mosquito samples at Langley. (U.S. Air Force photo by Airman 1st Class Devin S. Michaels/Released)

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)

Mitchel Burcham, 633rd Civil Engineering Squadron Pest Management technician, speaks to U.S. Air Force Airman 1st Class Ashley King, 633rd CES Pest Management apprentice, at Langley Air Force Base, Va., June 18, 2015. Burcham trains the Pest Management Airmen on how to identify different mosquitos so they can measure each species’ population. (U.S. Air Force photo by Airman 1st Class Devin S. Michaels/Released)

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)