Secretary of the Interior Ken Salazar, right, and Joanne Hanley, superintendent of the Flight 93 National Memorial, pause for the invocation during the groundbreaking ceremony for the Flight 93 National Memorial Saturday, Nov. 7, 2009 in Shanksville, Pa. The flag in the background marks the crash site of United Flight 93 on Sept. 11, 2001. AP Photo logo AP Photo 3 weeks ago

Secretary of the Interior Ken Salazar, right, and Joanne Hanley, superintendent of the Flight 93 National Memorial, pause for the invocation during the groundbreaking ceremony for the Flight 93 National Memorial Saturday, Nov. 7, 2009 in Shanksville, Pa. The flag in the background marks the crash site of United Flight 93 on Sept. 11, 2001.