I agree, and even with the most sophisticated ways of tracking incoming overhead phenomena, worst case they'd still have only a small window of time to hide everything under the bed. And, you know, press the button that makes all the foundations flip to hide the buildings underground and reveal painted images of the desert and huge burning piles of alien corpses.
Also, it's "lose" x2 (sorry, the wrong word makes it hard to read). I'll remove this line if you could fix please.