Bill Tate, a U.S. Fish and Wildlife Service employee, holds an endangered Okaloosa darter during a sampling session. Christened a "National Recovery Champion" by the USFWS, the Air Force achieved key milestones in the Okaloosa Darter Recovery Plan that boosted the darter population to more than 900,000, from a low of approximately 1,500. (U.S. Air Force photo)