Here is one of the heroes of that day. From the LA Times:
If you were lucky enough to have a choice, there were only two ways to go Monday morning on the campus of Virginia Tech: away from danger or toward it. Seventy-six-year-old engineering professor Liviu Librescu chose the second option, saved a classroom full of students and became a hero — at the cost of his life.
As a child, he had survived the Holocaust. As an adult, he had survived persecution for defying Romania's brutal Communist regime during the Cold War. With their children grown, he and his wife, Marlena, had spent a quiet two decades on a peaceful university campus in rural Virginia.
But Monday, trouble found him once more. With bursts of gunfire rattling through the second floor of Norris Hall, Librescu closed his classroom door, giving his students time to escape through the windows, recalled senior Caroline Merrey of Baltimore, the third student to jump.
"He saved my life," Merrey said.
As they fled, Librescu held the door shut with his body while the gunman, 23-year-old Tech senior Seung-hui Cho, tried to force his way inside.
Moments after the last student leapt to safety, Cho apparently forced the door open and shot Librescu to death.
