Liviu Librescu

Liviu Librescu was a Romanian-born internationally renowned professor of aerospace engineering at Virginia Tech. He survived the Holocaust when he was young. At the age of 76, he held the door of his classroom shut while the gunman attempted to enter it. Most of his students managed to escape through the windows. He was shot 5 times through the door and managed to saved 22 out of the 23 students in his class. A shot to his head proved fatal.