Col. Jonelle Eychner, 51st Mission Support Group commander, left, passes the guidon to Lt. Col. Brian Low, incoming 51st Civil Engineer Squadron commander, during the 51st CES assumption of command ceremony at Osan Air Base, Republic of Korea, July 6, 2021. As the presiding officer, Eychner facilitated the transition of 51 CES command by presenting the ceremonial guidon to the incoming officer.