Vice President Kamala Harris is attending the Shanksville, Pennsylvania, memorial event. Shanksville was the site of the Flight 93 crash.
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Scott Detrow is a White House correspondent for NPR and co-hosts the NPR Politics Podcast.
Asma Khalid is a White House correspondent for NPR. She also co-hosts The NPR Politics Podcast.
Ron Elving is Senior Editor and Correspondent on the Washington Desk for NPR News, where he is frequently heard as a news analyst and writes regularly for NPR.org.