Lt. Brian Heintschel, assigned to the entomology division of Navy Environmental and Preventive Medicine 6 at Joint Base Pearl Harbor-Hickam, studies a sample of insects collected from ships and shore facilities. Medical entomology is the study of insects, spiders, ticks and mites, collectively referred to as arthropods, and the diseases they transmit. NEPMU-6 supports operational forces and shore installations by providing services such as pest control training and uniform treatment with insect repellent.