Pest management sprays the base
A mosquito aerial sprayer, or fogger, is used June 13, 2018, on Grand Forks Air Force Base, North Dakota. The 319th Civil Engineer Squadron pest management section conducts fogging operations in areas on base where mosquitos are the most active. The optimal weather conditions for spraying is when there is no rain, or overcast, and the wing speed is under 10 miles per hour. (U.S. Air Force photo by Airman 1st Class Melody Wolff)