Dr. Art Evans, entomology researcher, uses a mouth-operated aspirator during a black light sheet insect collection at Fort Eustis, Va., June 12, 2015. Evans placed several traps throughout the installation’s forested training areas. The training areas are important because they reduce soil erosion, contribute to air quality which in turn provides recreational opportunities and aesthetics as well as resources for wildlife. (U.S. Air Force photo by Senior Airman Kimberly Nagle/Released)