Biden, Harris participate in Flight 93 wreath laying ceremony in Shanksville, Pennsylvania

 President Biden and Vice President Kamala Harris are participating Wednesday in a wreath laying ceremony at the Flight 93 National Memorial in Shanksville, Pennsylvania.

The National Park Service says Flight 93 "was the only one of the four hijacked aircraft that failed to reach the terrorists' intended target" on 9/11.

"The flight data recorder that was recovered from the crash site revealed that the terrorists had reprogrammed the aircraft's autopilot system for a new destination -- Washington, D.C. Recovered evidence and responses to interrogations revealed that the terrorists' intended target was most likely the United States Capitol Building, where the nation's legislators were in session," according to the NPS. "Flight 93 crashed only 20 minutes flying-time from Washington, D.C."

"The terrorists remained in control of the plane and chose to crash it rather than risk the passengers and crew regaining control of the aircraft," it also said.