Col. Michael J. Colvard (left), 2nd Maintenance Group

Col. Michael J. Colvard (left), 2nd Maintenance Group commander, awards the Meritorious Service Medal to Lt. Col. Tiffany L. Arnold (right), outgoing 2nd Maintenance Squadron commander, during a change of command ceremony at Barksdale Air Force Base, La., June 14, 2019. The Meritorious Service Medal is awarded to members of the armed services who distinguish themselves by outstanding service to the United States. (U.S. Air Force photo by Airman Jacob B. Wrightsman)