Airman 1st Class David Pitts, a pest management apprentice assigned to the 28th Civil Engineer Squadron, sprays pesticide along the backside of the 28th Maintenance Squadron at Ellsworth Air Force Base, S.D., April 7, 2017. Pest management utilize tools such as mouse traps, live traps, bird, and various sprayers to prevent pests from nesting on base. (U.S. Air Force photo by Airman 1st Class Donald C. Knechtel)