Capt. Patricia Cassidy, 28th Medical Operations Squadron physical therapy officer in charge, tests strength levels of Capt. Chad Nishizuka, 34th Bomb Squadron chief of weapons and tactics, during a physical therapy appointment at Ellsworth Air Force Base, S.D., Oct. 2, 2013. The 28th MDOS physical therapists provide patients with therapeutic treatments designed to relieve pain and restore normal muscle and joint functions. (U.S. Air Force photo by Airman 1st Class Alystria Maurer/Released)