Airman 1st Class Bountai Chantala, left, and Airman 1st Class Ryan Harmening, far right, surgical technicians specializing in orthopedics with the 779th Surgical Operations Squadron, assist with a total knee arthroplasty at Malcolm Grow Medical Center, Sept. 14. During surgery, the technicians pass instruments, sutures and sponges as well as perform a variety of other tasks depending on the surgeon’s needs. (U.S. Air Force photo/ Staff Sgt. Renae Kleckner)