Proper form
SHAW AIR FORCE BASE, S.C. -- Capt. Melissa Durham (right), 20th Medical Operations Squadron physical therapy services chief, shows Master Sgt. Sonya Davis, 20th MDOS Medical Services Flight NCO in charge, how to properly perform muscular exercises Nov. 16 in the physical therapy room. (U.S. Air Force photo/Senior Airman John Gordinier)