U.S. Air Force Fancia Bienvenue, 633rd Aerospace Medical Squadron aerospace and operational physiological technician, assists Chief Master Sgt. Steve Betancourt, 633rd Medical Group superintendent, and Airman 1st Class Alexis Shaw, 633rd Medical Support Squadron health services management technician, at the base altitude chamber during a Chief Shadow Day tour at Langley Air Force Base, Va., Jan. 26, 2012. Airmen shadowing the chiefs learned about the missions of different units on base from the perspective of upper-level leadership. (U.S. Air Force photo by Airman 1st Class Racheal Watson/Released)