Survivor recalls disastrous D-Day rehearsal

This week, as the Allies commemorate the 70th anniversary of D-Day, there is one story from the invasion most people don't know.

It happened during the rehearsal, but the U.S. military kept it secret, long after the war.

In the waters off a peaceful stretch of beach in southern England, the U.S. military lost more lives practicing to land on Utah Beach than actually died there on D-Day.