In the book The Art of Terminator Salvation, fans can find hundreds of examples of concept art, storyboards and illustrations from the film.
As you can see, one series illustrates, literally, how to pin a terminator down using a helicopter. Thanks to this storyboard, John Connor was able to pull the feat off in the film. Hit up io9 to check out the rest of the series. [io9 and Amazon]
https://gizmodo.com/batman-uh-i-mean-john-connor-is-about-to-waste-this-5026732
