9-11

At the World Trade Center, a man ran down the stairs with another person, thereby saving his life.

Just ahead of the collapse, after they finally reached the bottom, his rescuer started walking away.

The guy he saved, yelled for him to stop, and said, “You saved my life, how can I ever thank you.”

To which his rescuer replied. "There is no need to thank me, just make sure, that your life is worth saving.”