Secretary Hagel visits Sgt. Major Battaglia Secretary of Defense Chuck Hagel visits Senior Enlisted Advisor to the Chairman of the Joint Chiefs of Staff Sgt. Major Bryan Battaglia in his office in the Pentagon on March 5, 2013. Hagel is informally meeting with each of the services senior enlisted advisors. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 555270-C-CXX76-584.jpg Photo Gallery