I remember reading of Dave Platt and a few other notable British modelers working on flying models for that shoot. That was just before I saw his SBD at the Olathe Nat's in 68.

At the time, they were really pushing the state of the art, today it would just be CGI.

But as I pointed out much earlier, you need dynamic scaling and time scaling with video to get the correct effect. A guy name Loran Tregallus did this for Beechcraft in Wichita about 50 years ago!