Secretary Panetta escorts Canadian Minister of Defense Peter MacKay into the Pentagon Secretary of Defense Leon E. Panetta, right, escorts Canadian Minister of Defense Peter MacKay through an honor cordon and into the Pentagon in Arlington, Va., on Sept.30, 2011. Panetta and Mackay will meet to discuss security matters of mutual interest. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 665752-J-CND02-300.jpg Photo Gallery