U.S. Air Force Master Sgt. Sherri Moore, Air Forces Northern communications directorate, poses a question to Army Command Sgt. Maj. Robert Winzenried during an enlisted call at Tyndall Air Force Base, Fla., Dec. 19. This was Winzenried’s first visit to Tyndall since he took over as the top enlisted leader at the North American Aerospace Defense Command and U.S. Northern Command Sept. 15. (U.S. Air Force photo by Christopher Cokeing)