Top Brass: President Nominates Dempsey as Joint Chiefs of Staff Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email President Barack Obama speaks as Army Chief of Staff Gen. Martin Dempsey, and Navy Admiral James 'Sandy' Winnefeld listen during an event of Department of Defense personnel announcements. ( Alex Wong/Getty Images / Getty ) Produced by Hsi-Chang Lin Produced by PRI and WNYC