1. Fast forward to the Doolittle raid.

2. Play movie as soon as you see the first flak gun firing.

3. Using slow forward on DVD player, watch for the first shot that takes place back in Afflecks B-25.

4. Look towards the top of the screen at the navigators windows.

5. Notice that the center window is green screen, the rest of the windows show sky, but the center is obviously, bright green.