Mark Bingham was born in 1970, the only child of mother Alice Hoagland and father Gerald Bingham. He grew up in Miami, Florida, and Southern California before moving to the San Jose area in 1983. Bingham was an aspiring filmmaker growing up, and began using a video camera as a teenager as a personal diary through which he expressed himself and documented his life and the lives of his family and friends. He accumulated hundreds of hours of video documenting the final decade and a half of his life. He graduated from Los Gatos High School as a two-year captain of his rugby team in 1988. As an undergraduate at the University of California, Berkeley, Bingham played on two of Coach Jack Clark’s national-championship-winning rugby teams in the early 1990s. He also joined the Chi Psi fraternity, eventually becoming its president. Upon graduation at the age of twenty-one, Bingham came out as gay to his family and friends. A large athlete at 6 ft 4 in (190 cm) and 225 pounds (102 kg), Bingham also played for the gay-inclusive rugby union team San Francisco Fog RFC. Bingham played No. 8 in their first two friendly matches. He played in their first tournament, and taught his teammates his favorite rugby songs. Mark Bingham had recently opened a satellite office of his public relations firm in New York City, and was spending more time on the East Coast. He discussed plans with his friend Scott Glaessgen to form a New York City rugby team, the Gotham Knights.

On the morning of September 11, Mark Bingham overslept and nearly missed his flight, on his way to San Francisco to be an usher in his fraternity brother Joseph Salama’s wedding. He arrived at the Terminal A at 7:40am, ran to Gate 17, and was the last passenger to board United Airlines Flight 93, taking seat 4D, next to passenger Tom Burnett. United Flight 93 was scheduled to depart at 8:00am, but the Boeing 757 did not depart until 42 minutes later due to runway traffic delays. Four minutes later, American Airlines Flight 11 crashed into the World Trade Center’s North Tower. Fifteen minutes later, at 9:03 am, as United Flight 175 crashed into the South Tower, United 93 was climbing to cruising altitude, heading west over New Jersey and into Pennsylvania. At 9:25 am, Flight 93 was above eastern Ohio, and pilots Jason Dahl and LeRoy Homer received an alert, “beware of cockpit intrusion,” on the cockpit computer device ACARS (Aircraft Communications and Reporting System). Three minutes later, Cleveland controllers could hear screams over the cockpit’s open microphone. Moments later, the hijackers, led by the Lebanese Ziad Samir Jarrah, took over the plane’s controls, disengaged the autopilot, and told passengers, “Keep remaining sitting. We have a bomb board”. Bingham and the other passengers were herded into the back of the plane. The curtain between first class and second class had been drawn, at which point the pilot and co-pilot were seen lying dead on the floor just outside the curtain, their throats having been cut. Within six minutes, the plane changed course and was heading for Washington, D.C. Several of the passengers made phone calls to loved ones, who informed them about the two planes that had crashed into the World Trade Center. Mark Bingham phoned his mother, reporting that his plane had been hijacked and relaying his love for her.

After the hijackers veered the plane sharply south, the passengers decided to act. Bingham, along with Todd Beamer, Tom Burnett and Jeremy Glick formed a plan to take the plane back from the hijackers. They were joined by other passengers, including Lou Nacke, Rich Guadagno, Alan Beaven, Honor Elizabeth Wainio, Linda Gronlund, and William Cashman, along with flight attendants Sandra Bradshaw and Cee Cee Ross-Lyles, in discussing their options and voting on a course of action, ultimately deciding to storm the cockpit and take over the plane. According to the 9/11 Commission Report, after the plane’s voice data recorder was recovered, it revealed pounding and crashing sounds against the cockpit door and shouts and screams in English. “Let’s get them!” a passenger cries. A hijacker shouts, “Allah akbar!” (“God is great”). Jarrah repeatedly pitched the plane to knock passengers off their feet, but the passengers apparently managed to invade the cockpit, where one was heard shouting, “In the cockpit. If we don’t, we’ll die.” At 10:02 am, a hijacker ordered, “Pull it down! Pull it down!” The 9/11 Commission later reported that the plane’s control wheel was turned hard to the right, causing it to roll on its back and plow into an empty field in Shanksville, Pennsylvania at 580 miles an hour, killing everyone on board. The plane was twenty minutes of flying time away from its suspected target, the White House or the U.S. Capitol Building in Washington, D.C. According to Vice President Dick Cheney, President George W. Bush had given the order to shoot the plane down had it continued its path to Washington.