The founder of a public relations firm known as The Bingham Group, Mark Bingham left San Francisco to catch a flight to New York in August 2001. On September 10th, he called his friend to tell him he was coming back to San Francisco. On September 11th, 2001, he overslept and was the last person to board Flight 93 in Newark.
After the flight was hijacked at 9:28 a.m., Mark Bingham called his mother from an Airfone 9 minutes later at 9:37 a.m. He told his mother he was on the flight, it was being hijacked, and the plane was taken over by three guys who said they had a bomb. His mother called him and left a message telling him about the hijacking and told him to do whatever he could to overpower the hijackers. Mark Bingham joined Tom Burnett, Todd Beamer, and Jeremy Glick to wrest control from the hijackers, and some flight attendants boiled water to use as weapons. Mark Bingham died on board of Flight 93 when it crashed near Shanksville, Pennsylvania.
Image from the National Park Service