Senior Airman Octavain Jackson, 6th Security Forces Squadron entry controller and Joint Services Against Drunk Driving secretary, briefs first sergeants and senior NCOs before a shift at MacDill Air Force Base, Fla., Nov. 8, 2019. Since January 2019, first sergeants have participated as designated drivers during weekends to assist joint service volunteers. (U.S. Air Force photo by Senior Airman Adam R. Shanks)