When the sound of gunfire neared his solid mechanics lecture inside Virginia Tech’s Norris Hall, there was confusion, according to reports from student witnesses. They dove under desks, darted to the windows. But, students say, Librescu headed for the door, blocking the gunman from entering. As shots rang out, he stood there.

That act of courage gave his class priceless seconds to escape, saving them from Cho Seung-Hui’s deadly rampage. But not himself…. The Holocaust survivor who saved a classroom | csmonitor.com