Donald Charles Winter is an American technologist and business leader who served as United States Secretary of the Navy. A former top executive of TRW, Aerospace & Defense, he was nominated in 2005 by President George W. Bush, confirmed by the United States Senate, and took the oath of office on January 3, 2006. In January 2009 Defense Secretary Robert Gates requested that Winter remain in office until President Obama picked his successor on March 13, 2009. He resigned on March 13.

Michael Glenn Mullen is a retired United States Navy admiral who served as the 17th chairman of the Joint Chiefs of Staff from October 2007 to September 2011.