Master Sgt. Charity Edwards, 914th Force Support Squadron First Sergeant uses her skills as a certified physical trainer during a fitness class offered at the Niagara Falls Air Reserve Station Fitness Center, April 11, 2013, Niagara Falls, N.Y. The class utilizes free weights, spinning bikes, aerobic steps, kettlebells, medicine balls, suspension straps, stability balls, BOSU trainers, yoga and martial arts techniques; No two workout sessions are the same. (U.S. Air Force photo by Tech. Sgt. Joseph McKee)