In summary, the poster indicates that his father told him of alien creatures in the nuclear reactor..
The highlight for me:
What he told me didn’t make much sense at first. You have to figure someone running at a dead sprint to pull an emergency alarm at a nuclear power plant wouldn’t stop for anything. But he stopped. And he stared. Something had floated to the top of the boiling water. The way he described it, it was dark, grayish red, almost shaped like a person, but much bigger and dreadfully deformed. It floated, facedown, in the pool. The Party members didn’t react but the soldiers raised their rifles at the thing until one of the politicians barked an order at them to stand down.
A moment or two later, the thing crawled out of the pool and raised itself on thick legs to stand before the gathered crowd. What dad said he remembered most about the thing was its head. It sat directly on its lopsided shoulders and it had no eyes, no nose, no ears. All that was there was a gaping hole. Not even a mouth, but a hole. And inside, the same blue glow from the pool shone out onto the faces of the people surrounding it.