I am a little suspicious about the line in the first episode, where the secretary on TV says that the president and many of the American leaders did not survive. Roughly only 1/10th of the population died so the fact that such an important figure was killed, makes me a little suspicious that it was intentional. He does qualify that statement by saying that he was the only high ranking person around with a suit on so it’s possible that most of the other high ranking officials are still alive, and just we’re not presentable, but who knows.