Extras

Video thumbnail: NOVA 3D Spies of WWII Preview

NOVA

3D Spies of WWII Preview

NOVA reveals how the Allies used special aerial photos to deal a dire blow to the Nazi.

3D Spies of WWII Preview

Video thumbnail: NOVA Sneak Peek: 3D Spies of WWII

NOVA

Sneak Peek: 3D Spies of WWII

Premiering January 18, 2012 at 9pm on PBS

Sneak Peek: 3D Spies of WWII