Lt. Col. Charles Hassell, outgoing 460th Civil Engineer Squadron commander, center, relinquishes the guidon to Col. Shawn Thompson, 460th Mission Support Group commander, left, June 27th, 2018 on Buckley Air Force Base, Colorado. The exchanging of the guidon symbolizes the official change of command. (U.S. Air Force photo by Airman 1st Class Jake Deatherage)