Hagel, Obama, Biden, Dempsey Stand During Hagel's Farewell Tribute Defense Secretary Chuck Hagel, far left, President Barack Obama, Vice President Joe Biden and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, stand during the Armed Forces Farewell Tribute to Hagel on Joint Base Myer-Henderson Hall in Arlington, Va., Jan. 28, 2015. Obama hosted the event for Hagel, the 24th defense secretary. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 422889-A-KXJ83-077.jpg Photo Gallery