Some versions of Battle don’t even have that scene essentially setting up the future bomb cult. I’ve long been fascinated by the concept that the films are a gigantic time loop with variations every time it plays out. Kind of like that one Star Trek TNG episode.

David Gerrold, (who wrote the novelization of the movie) got to play an ape extra, and wrote an account in Starlog magazine about what it was like to be an ape for a day. And how weird it is to use a urinal with ape hands on. 😉

Also, you haven’t lived until you’ve seen Paul Williams in full ape makeup singing on the Tonight Show.
https://youtu.be/bE2m355-JRo