SECRETARY'S SIGNATURE Defense Secretary Leon E. Panetta signs the guest book while Navy Adm. James A. Winnefeld Jr., left, vice chairman of the Joint Chiefs of Staff, applies a stitch to help restore the flag that flew atop the World Trade Center on Sept. 11, 2001, during a 9/11 event in the Pentagon courtyard, Sept. 9, 2011. Jeff Parness, right, founder and chairman of the New York Says Thank You Foundation, which was responsible for bringing the flag to the Pentagon, looks on. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 293164-F-PVY02-792.jpg Photo Gallery