Change of Command Published Oct. 21, 2011 By Captain Shawn M. Walleck 911 AW/PA PITTSBURGH IAP ARS -- Col. Daryl Hartman, 911th Operations Group commander (left) passes the guidon to Lt. Col. Chuck Sargent (right), who assumed command of the 911th Operations Support Squadron during a ceremony held at the 911th Airlift Wing on Oct. 1, 2011. The 911th Operations Support Squadron's primary responsibility is to provide support functions to the flying squadron by utilizing current operations, tactics, aircrew and Life Support assets.