Det 4 standup
BEALE AIR FORCE BASE, Calif. – Col. Troy Endicott, 21st Operations Group commander, passes the guidon to Capt. Jonathan Brydie, 21st OG Detachment 4 commander, signifying assumption of command during a ceremony Dec. 8, 2015 at Beale Air Force Base, Calif. The 21st OG from Peterson Air Force Base, Colo. activated Detachment 4 to train Airmen and allies on upgraded early warning radar fundamentals before they are assigned to other geographically separated units of the group. (courtesy photo)