The end credits evoke a familiar Cold War atmosphere. This is really an excellent film. "It’s not safe for you." That was a sweet moment, with a tiny cry at the very end—such a good dog! It avoids some predictable conventions. The earlier scene and the absence of a certain trope are noteworthy. The brief apocalyptic sequence was brilliant. It doesn't have to be factual, and it doesn’t need to be real, but both seem rooted in actual events; something strange occurred. They've clearly turned this into a Disney-style series.

Source on TMDB