They're honored every anniversary of the 9/11 attacks, but ten years since the passengers of Flight 93 fought back against the terrorists, it's been a challenge to get a permanent memorial in place.

FOX News Radio's Jennifer Keiper tells us what's in the works in Part 21 of our month-long special series, "9/11: 10 Years Later"...

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In our next report, the new generation of technologically-savvy jihadists.

CLICK HERE to listen to Parts 1-20 of our month-long special series, "9/11: 10 Years Later"