Col. John D. McKaye, 655th Intelligence, Surveillance and Reconnaissance Group commander, passes the guidon to Lt. Col. Jeffrey Derr, incoming 16th Intelligence Squadron commander, during a change of command ceremony March 10, 2018. The change of command ceremony is steeped in tradition when military units used flags with unique colors and symbols as a rallying point in battle. The passing of the flag in front of troops signaled a change in leadership and allegiance. (U.S. Air Force photo/Staff Sgt. A.J. Hyatt, 70th ISR Wing Public Affairs)