U.S. Defense Secretary Leon E. Panetta meets with Canadian Defense Minister Peter G. MacKay prior to the NATO "jumbo" ministerial conference at NATO headquarters in Brussels, April 18, 2012. U.S. Defense Secretary Leon E. Panetta meets with Canadian Defense Minister Peter G. MacKay prior to the NATO "jumbo" ministerial conference at NATO headquarters in Brussels, April 18, 2012. SHARE: Download: Full Size (2.28 MB) Tags: Photo Essays Credit: VIRIN: 426352-S-VLK60-516.jpg Photo Gallery