355th OSS welcomes new commander
U.S. Air Force Col. Philip Wielhouwer, 355th Operations Group commander, passes the guidon to Lt. Col. Todd Perlman as he assumes command of the 355th Operations Support Squadron at Davis-Monthan Air Force Base, Ariz., June 19, 2014. Passing the guidon is a traditional military custom which symbolizes the relinquishment and assumption of command of a military organization. (U.S. Air Force photo by Airman 1st Class Betty R. Chevalier/Released)