U.S. Air Force Airman 1st Class Ryan Donaldson, 633rd

U.S. Air Force Airman 1st Class Ryan Donaldson, 633rd Surgical Operations Squadron surgical technician, verifies proper screws are being used before handing them to the orthopedic surgeon during a procedure at Langley Air Force Base, Va., Feb. 5, 2013. Orthopedic surgeons use both surgical and nonsurgical means to treat musculoskeletal trauma, sports-related injuries, degenerative disease, infections, tumors and congenital disorders. (U.S. Air Force photo by Senior Airman Teresa Aber/Released)