Thanks to the action of some very brave men, the world won’t ever know the additional destruction it could have seen on Sept. 11, 2001.
Tom Burnett, Mark Bingham, Jeremy Glick and Todd Beamer rightfully are forever immortalized for their role in battling a group of hijackers on United Flight 93 -- a flight that ultimately took the lives of everybody on board the plane.
After Burnett, Bingham, Glick and Beamer, all former athletes, stormed the cockpit and battled four hijackers, the plane ended up crashing into a Pennsylvania field instead of a Washington, D.C. landmark.
The plan was for the hijackers to crash the plane into the Capitol, the Pentagon or the White House, according to published reports.
The four men who prevented the attack posthumously received the Arthur Ashe Courage Award in 2002.
All but Bingham had children or were expecting children before that fateful day, and those kids, all these years later, are carrying on the legacies left by fathers.
Here are some of their stories.