A U.S. Marine with the Provost Marshall’s Office, Headquarters Battalion, guides his military working dog after exiting a CH-53E during acclimation training on Marine Corps Base Hawaii, June 12, 2020. This air-ground integration training was the first step in acclimating the dogs to the aircraft in order to enable future training in which the canine unit could be used in an air assault scenario. (U.S. Marine Corps photo by Lance Cpl. Jacob Wilson)