Winnefeld Speaks at Center for Strategic and International Studies Navy Adm. James A. Winnefeld Jr., vice chairman of the Joint Chiefs of Staff, gives remarks during a conference on the future of missile defense at the Center for Strategic and International Studies in Washington, D.C., May 19, 2015. SHARE IMAGE: Download Image: Full Size (0.04 MB) Photo By: VIRIN: 038820-C-QYM61-527.jpg Photo Gallery