Biden described how he first learned of the accident on Dec. 18, 1972, just weeks after he was first elected to the U.S. Senate from Delaware. While he was in Washington, D.C., his wife, Neilia, one-year-old daughter, Naomi, and sons, Beau and Hunter, were Christmas shopping in Hockessin, Del. Their car was struck by a tractor-trailer. Only Beau and Hunter survived.
"There will come a day, I promise you, and your parents, as well, when the thought of your son or daughter or your husband or wife brings a smile to your lips before it brings a tear to your eye," he said. "It will happen. My prayer for you is that day will come sooner or later. But the only thing I have more experience than you in is this: I'm telling you it will come."
Vice president opens up about past grief and thoughts of suicide.