Have you ever wondered how you would react to an emergency situation? A real emergency? All of us have been tested. But most people haven't been tested with the ultimate test of all: What if you could save the lives of others by giving up your own?

On April 16, 2007, Liviu Librescu was given the ultimate test.

He was able to save his own life but some of his students would die or he could give his life, but many young students - with their whole life ahead of them - would be spared the murderous weapon of a fellow classmate.

Librescu passed the test and gave up his life. He took four bullets on that day, while he held the door to his classroom closed so his students could escape.

At least 22 young lives were spared by Professor Librescu's courageous actions.

What can we learn from the professor's courage under fire? What real life lesson can we take from him since most of us are not called upon to give our lives for others?

There is a lot to learn.

The fact that Liviu Librescu, of all people, was the one to give his life so others may live is a lesson in and of itself.

Professor Librescu grew up in Romania and as a young boy suffered persecution at the hands of the Nazis, may their names be blotted out. When WWII was over the Communists ruled in Romania. The professor then suffered once again for being a Jew.

When Librescu finally reached Israel he had every reason to live only for himself. He spent so many of his young and formative years under persecution that it was essentially his time to enjoy.

But he taught at Tel Aviv University and Technion in Haifa giving over his vast knowledge, made a name for himself as a special professor and was invited to Virginia Tech as a visiting professor. Librescu so impressed the University that he was invited to stay.

Professor Liviu Librescu, a man who understood murder, who understood persecution, showed courage under fire. He knew that he must save his students - the ones with their futures ahead of them.

At this point he could have said, "Madmen took enough of my life. I should run and save myself."

But he was a mentsch. He told his students to run and save themselves.

Even at the bitter end he was worried about others.

His legacy to us is that regardless of our own personal circumstances, we should be aware of those who need more and be ready to give of ourselves.