Question: When the soldiers were skydiving into the city why did they have red flares attached to their boots?
Question: Why does the male MUTO mate with the female if she is already pregnant?
Answer: The female produces the eggs, and then the male mates with her to fertilize them. She is technically not "pregnant" until after the mating.
Question: How did the female MUTO get pregnant if they were hibernating far away from each other? It's either that she was born pregnant and they mated, which made her produce more eggs than usual, but I'm not sure.
Answer: Another person right here answered this question as well, and to paraphrase what they said: the female had produced the eggs. But for all means and technicalities, she wasn't pregnant until she mated with the male and received his sperm that would create the embryos inside the eggs. At least, that's what we can assume based on real-life egg-laying animals.
Question: Why are they transporting entire missiles instead of just detaching the warheads (which are air portable)?
Answer: Because detaching them and reattaching them would have taken time, which they didn't have.
But, after the crash, they remove the warheads and transport them by helicopter and leave the boosters behind, as they only need the warheads.
Answer: Due to the storm, it became difficult for the soldiers to see one another. The flares were used to help them keep track of their positions during the skydive.
Casual Person