Before Flight 93 crashed, loved ones called home from the plane. Deena Burnett Bailey heard the sound of the engine on the phone when her husband Tom called, saying she remembers “the feeling of wanting to help him and knowing that I couldn’t.” David Muir reports for ABC News' "9/11: The Day That Changed America." #ABC2020 https://abcn.ws/3A2adll | ABC 20/20

We thank you for watching with us tonight, as we remembered the heroes of Flight 93. | Dateline NBC