Enrico Fermi, tried to allay the fears this new found weapon brought about.

But even the people involved in its development weren't quite sure the right thing had been done.

Ruben G. Gustavson (U. of Chicago): “On the day the bomb was dropped I met the Director of the University laboratory which helped to develop the Atomic Bomb. His first words were ‘this is a very sad day for us. Let us not hope we’ve placed dynamite in the hands of children."

It was a little late to be asking those kinds of questions. The damage had already been done and the incredible fear became part of our national DNA.