Secretary of the Interior Ken Salazar, right rear, and Pennsylvania Governor Ed Rendell, left rear, lead the ground breaking for the Flight 93 National Memorial Saturday, Nov. 7, 2009 in Shanksville, Pa. From foreground left, are Campbell Peterson, and Peyton Peterson, grandsons of Flight 93 passengers Donald Peterson and Jean Hoadley Peterson, and Sarah Wainio, sister of Flight 93 passenger Honor Elizabeth Wainio. Plans are for the memorial to be dedicated on Sept. 11, 2011. AP Photo logo AP Photo 2 weeks ago

Secretary of the Interior Ken Salazar, right rear, and Pennsylvania Governor Ed Rendell, left rear, lead the ground breaking for the Flight 93 National Memorial Saturday, Nov. 7, 2009 in Shanksville, Pa. From foreground left, are Campbell Peterson, and Peyton Peterson, grandsons of Flight 93 passengers Donald Peterson and Jean Hoadley Peterson, and Sarah Wainio, sister of Flight 93 passenger Honor Elizabeth Wainio. Plans are for the memorial to be dedicated on Sept. 11, 2011.