dark skies - How is it that none of the neighbors saw the lights?

The aliens could appear and disappear at will, enter the home without coming through any opening, open every door simultaneously, and control their sons mind to lure him out of the bedroom where they were making their last stand. So showing visuals and sounds that only the occupants of the house could see and hear has been established throughout the film.

I think the real question/flaw is with them all huddled in the master bedroom at the end why would they let the son wander over to the door, open it, and casually stroll straight to the aliens?

In retro-spec, my second paragraph is answered by my first, ironic. Any application of normal logic to this film given the writers carte blanche of "anything goes" is the actual flaw.