Robert Orton Work is an American national security professional who served as the 32nd United States Deputy Secretary of Defense for both the Obama and Trump administrations from 2014 to 2017. Prior to that, Work was the United States Under Secretary of the Navy from 2009 to 2013, and before that served as a colonel in the United States Marine Corps. Work retired in 2001 and worked as a civilian at the Center for Strategic and Budgetary Assessments (CSBA) and the George Washington University in various positions relating to military and strategic study. From 2013 to 2014, he was the CEO of the Center for a New American Security (CNAS). After his time as Deputy Secretary of Defense, he went on to serve on the Board of Raytheon.