STENNIS CHAT U.S. Navy Adm. James A. Winnefeld Jr., vice chairman of the Joint Chiefs of Staff, speaks with U.S. sailors aboard the aircraft carrier USS John C. Stennis, Feb. 28, 2013. The Stennis is conducting maritime security operations, theater security cooperation efforts and support missions for Operation Enduring Freedom. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 788263-H-NFA01-723.jpg Photo Gallery