Because ho-lee chit that is some good television. I'm not sure if the makers of it are taking liberties or exaggerating, because those commies couldn't have been that stupid. I don't think I'm giving away spoilers here, as we all basically know what happened, but the reactor exploded and their initial response was "There was no explosion. Everything is fine. Let's drink vodka and celebrate how awesome the Soviet Union is." That show is going to win a ton of awards.