Sterilized surgical instruments sit in a bowl during an ACL surgery at the Mike O’Callaghan Federal Medical Center on Nellis Air Force Base, Nev., Oct. 17, 2016. With surgeons, nurses and technicians working together, the orthopedics unit helps heal Airmen daily to return them to peak form and the mission. (U.S. Air Force photo by Airman 1st Class Kevin Tanenbaum/Released)