Chief Master Sergeant James A. Roy visits the 911th Maintenance Group Published March 17, 2010 By Master Sgt. Mark Winklosky A PITTSBURGH IAP ARS -- Chief Master Sergeant James A. Roy visits the 911th Maintenance Group, March 6, 2010. The 911th Airlift Wing is the first Air Force Reserve Base for the 16th Chief Master Sergeant of the Air Force to visit.