Mr. Paul Hackett, 914th Air Refueling Wing exercise physiologist, runs a certification course for wing physical training leaders at the new fitness center at Niagara Falls Air Reserve Station, N.Y. on June 6, 2021. Fitness testing has resumed at Niagara after a long pause due to Covid-19. (U.S. Air Force photo by Staff Sgt. Tate G. Pollock)