IT: Welcome to Derry episode 7 ending, explained: Whats the army planning?

IT: Welcome to Derry only has one episode left, and things seem to be going from bad to worse.Because as well as a Pennywise origin story and a re-creation of one of the book's most disturbing historical chapters, episode 7 also ends with a twist that spells trouble for not just the main characters, but potentially the entire United States.So what exactly happened, and what could it mean?SEE ALSO:'IT: Welcome to Derry': All the Stephen King Easter eggs so far
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