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