U.S. Air Force Director of Staff, Joint Force Headquarters, North Carolina Air National Guard (NCANG) Brig. Gen. Clarence Ervin, says farewell with gratitude to Col. Marshall C. Collins for his years of dedication and leadership to the 145th Airlift Wing following a change of command ceremony held at the NCANG Base, Charlotte Douglas International Airport, Oct. 1, 2016. (U.S. Air National Guard photo by Staff Sgt. Laura J. Montgomery)