PEP RALLY Defense Secretary Chuck Hagel and Army Gen. Martin E. Dempsey, chairman of the Joint Chiefs of Staff, applaud during a pep rally at the Pentagon, Dec. 12, 2014, for cadets from the U.S. Military Academy at West Point before the upcoming Army-Navy football game. The Army's mascot, a mule, looks on. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 313008-P-MWY92-963.jpg Photo Gallery