U.S. Air Force Chief Master Sgt. Mark Hurst, 633rd Air Base Wing command chief, speaks about the relationship a command chief should have with his first sergeant during a first sergeants seminar at Langley Air Force Base, Va., May 8, 2015. First sergeants advise their commander on a wide range of topics such as mentoring, professional development and esprit de corps.(U.S. Air Force photo by Senior Airman Breonna Veal/Released)