Look back: Flight 93 memorial construction

Posted: 9:58 AM EDT Aug 24, 2011   Updated: 2:23 PM EDT Sep 10, 2013

Look back at some of the work that went into building the memorial to United Flight 93 in Pennsylvania.

Flight 93 Memorial 1
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Richard Snodgrass/National Park Service

Tokens honoring Flight 93 sit near the fence surrounding the permanent memorial's construction site in May 2011.


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