FLIGHT 93 On the eve of the 11th anniversary of the Sept. 11, 2001, terrorist attacks on the United States, Defense Secretary Leon E. Panetta visits the Flight 93 Memorial Plaza in Shanksville, Pa., Sept. 10, 2012. SHARE IMAGE: Download Image: Full Size (0.07 MB) Photo By: VIRIN: 531058-C-XNM34-000.jpg Photo Gallery