Obama nominates Gen. Martin Dempsey as chairman of the Joint Chiefs of Staff . Adm. James Winnefeld is nominated as vice chairman of the Joint Chiefs . Dempsey 's sense of humor has opened him up for some ribbing as well , like at the ceremony when he took command of the Army . ` The White House says it will not comment on personnel matters. Adm. Michael Mullen 's term as head of the joint chiefs ends in September .
Obama nominates Gen. Martin Dempsey as chairman of the Joint Chiefs of Staff . Adm. James Winnefeld is nominated as vice chairman of the Joint Chiefs . The White House says it will not comment on personnel matters. Adm. Michael Mullen 's term as head of the joint chiefs ends in September .