EFFICIENCIES BRIEFING Defense Secretary Robert M. Gates and Navy Adm. Mike Mullen, chairman of the Joint Chiefs of Staff, brief the press on proposed efficiencies that mark the next major step in the Defense Department's reform agenda at the Pentagon, Jan. 6, 2011. SHARE: Download: Full Size (0.05 MB) Credit: VIRIN: 951554-C-DLT11-946.jpg Photo Gallery