Stephen Feinberg — Currently serving as Deputy Secretary of Defense under Secretary Pete Hegseth

**Stephen Alan Feinberg** is the Deputy Secretary of Defense (confirmed January 2025), the #2 civilian at the Pentagon and the department's chief operating officer. Born March 29, 1960, The Bronx, New York. Princeton University (BA). Co-founded Cerberus Capital Management in 1992, growing it to $60B+ in assets under management — one of the largest private equity firms in the world. Cerberus portfolio includes DynCorp (now Amentum), Navistar Defense (MRAP vehicles), and multiple defense industrial base companies.