U.S. Air Force Staff Sgt. Elizabeth Lavaring, a fitness instructor assigned to the 509th Force Support Squadron, performs a barbell squat in the Fitness Center at Whiteman Air Force Base, Mo., Jan. 24, 2018. The weight room has a variety of specialty weight equipment and a large assortment of free weights for those with strength training and muscle toning in mind. (U.S. Air Force photo by Staff Sgt. Danielle Quilla)