Members of Nellis leadership render a salute as the National Anthem plays during a ceremony celebrating the Mike O’Callaghan Military Medical Center’s 25th anniversary at Nellis Air Force Base, Nevada, Nov. 12, 2019. During a ceremony that was attended by base and community leadership, the MOMMC celebrated O’Callaghan and 25 years of operations. (U.S. Air Force photo by Senior Airman Kevin Tanenbaum)