Look back at some of the work that went into building the memorial to United Flight 93 in Pennsylvania.
Tokens honoring Flight 93 sit near the fence surrounding the permanent memorial's construction site in May 2011.
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
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With Katy Perry set to headline the halftime show at Super Bowl XLIX, check out who has performed at past Super Bowls.