While in Shanksville filming Friday’s special (10/9c) on Flight 93, Park Ranger Katherine Hostetler showed our producers around the memorial. | Dateline NBC

🇺🇸Flight 93 National Memorial 🇺🇸 A common field one day. A field of honor forever. On Tuesday morning, September 11, 2001, the U.S. came under attack when four commercial airliners were hijacked and used to strike targets on the ground. Nearly 3,000 people tragically lost their lives. Because of the actions of the 40 passengers and crew aboard one of the planes, Flight 93, the attack on the U.S. Capitol was thwarted. 💔Flight 93 was approximately only 20 minutes away from DC. That day could