Well, in Five we are playing with the president and the others.
They were in there DURING the outbreak, they never just arrived there and noticed that the place was full of zombies. Everything was normal and then bang! Zombies attack.
All the scientist who were working in the lower levels got killed before JFK and others got to the labs area. There was storm outside, maybe the rockets exploding? We know that Maxis got his calculations wrong and Five (pentagon) didn't get direct hit.
Five is said to be connected with Ascension. I don't think Five takes place after the rockets hit Earth, simply because the zombies have yellow eyes and Sam is the announcer.
Sorry to say, but you're wrong at this point.
its same like in acension , when monkeys comes, it turns orange , its just there are just coincidences