Sitzman and Zapruder were not alarmed to see the Hesters on the ground, perhaps, because they all knew the “script” and how it was to end. They were all just “playing” their part.
I’ve wondered if Sitzman, in her interview, expressed surprise about her and Z hearing shots and yet continuing to film (instead of taking cover) was purposely stated to shield from questions about her and Z not acting alarmed when they heard them… to divert from the very possible thought that they knew the “script” and the outcome of it all… so no need to be alarmed…
🤷♂️