A visitor traces the date etched in a marble slab on the Wall of Names at the Flight 93 National Memorial before the 15th anniversary of the Sept. 11 terrorist attacks. (Jeff Swensen, Getty Images)
President Joe Biden and First Lady Dr. Jill Biden observed a wreath laying ceremony at the Flight 93 Memorial in Shanksville, Pennsylvania on Saturday.
The ceremony marked the 20th anniversary of the terrorist attacks on Sept. 11, 2001, which left nearly 3,000 people dead. The event began at 12:35 p.m.
