“When a writer or producer approaches the Pentagon and asks for access to military assets to help make their film, they have to submit their script to the entertainment liaison offices for vetting. Ultimately, the man with the final say is Phil Strub, the Department of Defense’s (DOD) chief Hollywood liaison.
If there are characters, action or dialogue that the DOD don’t approve of then the film-maker has to make changes to accommodate the military’s demands. If they refuse then the Pentagon packs up its toys and goes home. To obtain full cooperation the producers have to sign contracts — Production Assistance Agreements — which lock them into using a military-approved version of the script.”