United 93 is a 2006 docudrama thriller film written and directed by Paul Greengrass. The film largely chronicles the events aboard United Airlines Flight 93, one of the four hijacked flights during the September 11 attacks and the only one not to hit its intended target due to the intervention of passengers and crew; it also covers the experiences of government officials and air traffic controllers watching the other events of the attacks unfold.

Thomas Edward Burnett Jr. was an American who was the vice-president and chief operating officer of Thoratec Corporation, a medical devices company based in Pleasanton, California; he resided in nearby San Ramon, California. On September 11, 2001, Burnett was a passenger on board United Airlines Flight 93, which was hijacked as part of the September 11 attacks. He, along with other passengers, formed the plan to retake the plane from the hijackers, and led the effort that resulted in the crash of the plane into a field in Stonycreek Township near Shanksville, Pennsylvania, thwarting the plan of the hijackers to crash the plane into a building in Washington, D.C., most likely either the U.S. Capitol Building or the White House.