Defense Secretary Chuck Hagel and Army Col. Johnny K. Davis, commander of the 3rd U.S. Infantry Regiment, known as "The Old Guard," render honors during the Armed Forces Farewell Tribute to Hagel on Joint Base Myer-Henderson Hall in Arlington, Va., Jan. 28, 2015. President Barack Obama hosted the event, which included remarks by Vice President Joe Biden and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff.