Col. Mark S. Larson, left, 931st Air Refueling Wing commander, passes the 931st Security Forces Squadron guidon to Capt. Phillip B. Werner, incoming 931 SFS commander, during an assumption of command ceremony Feb. 4, 2017, McConnell Air Force Base, Kan. The passing of the guidon symbolizes the transfer of authority from one commander to the next. (U.S. Air Force photo by Senior Airman Preston Webb)