A modified U.S. C-130 aircraft, assigned to the 910th Airlift Wing, sprays water simulating a pesticide solution during a field exercise as part of the Department of Defense Aerial Spray Certification Course at the Lee County Mosquito Control District flightline here, Jan. 13, 2016. According to the 910th’s entomologists, the purpose of the exercise was to determine how wide of an area on the ground is being effectively treated by an aerial spray aircraft and how effectively the sprayed product is being delivered to the target area. Youngstown Air Reserve Station's 910th Airlift Wing is home to DoD’s only aerial spray mission. (U.S. Air Force photo/Master Sgt. Bob Barko Jr.)