Lt. Col. Scott Corey, 42nd Operational Medical Readiness Squadron commander, presents Airman 1st Class Vashon Williams, 42nd OMRS dental assistant, with the Air Force Achievement Medal during a ceremony December. 19, 2019, at Maxwell Air Force Base, Alabama. Williams witnessed the aftermath of a four-car pileup and performed life-saving first aid to several victims. (U.S. Air Force photo by Senior Airman Francisco Melendez-Espinosa)