Lt. Col. Jen Remmers, an entomologist assigned to the 910th Airlift Wing's 757th Airlift Squadron, explains to attendees of a Department of Defense aerial spray course the nozzle types and configurations used on a C-130H Hercules during aerial spray operations, Jan. 8, 2019 at Page Field in Lee County, Florida. Remmers is one of five 910th entomologists whose skills help accomplish the wing’s aerial spray mission to control disease-carrying insects, pest insects and undesirable vegetation and to disperse oils spills in large bodies of water. (U.S. Air Force photo/Senior Airman Juliet Louden)