21st FSS Change of Command
PETERSON AIR FORCE BASE, Colo. –Col. Timothy Ryan, 21st Mission Support Group commander, hands the 21st Force Support Squadron guidon to Maj. Summer Lewis, 21st FSS incoming commander, in a change of command ceremony at Peterson Air Force Base, Colo., July 31, 2017. The 21st FSS mission is to develop and support total force resilient Airmen and families sustaining the 21st Space Wing and partners. (U.S. Air Force photo by Senior Master Sgt. Jennifer Moss)