I don’t necessarily see the Pentagon involvment as a deepie thing; there are plenty of entities of one kind or another who are or have made fake videos presented as news or fact.
And here’s a plus thought - if damning video of Hitlery (or any bad guy) comes out and the fellow deepies and supporters scream “fake video”, then the experts can say “No, we examined, we can tell fake from real, and it’s real”.
I thought about that, but once they put the concept of real-looking fake videos out there, no democrats will believe a Hillary video showing her committing real crimes, and we will get nothing out of them.