You can't see it yet, but the first panel is going to be full of hysterical screams as a demon-looking pyramid thing apparently caught Forrest Town unprepared.
So Paul observes that at least the people are running, but Shane comments that the Onyx Pyramid (he doesn't call it that, since these guys don't have a clue what it is) ain't there anymore. It's gone!
Paul utters "that can't be!" and peers into the sky with intensity. That's when he observes a bird hitting some kind of an invisible wall. The pyramid is still there, he realizes, it just can't be seen.
That's the end of this investigation, though, as Shane picks up and joins the rest of the crowd, because that guy is DONE with EVERYTHING.
This is also the last we'll see of these two for this story. They're off to the Capitol now and (SPOILERS) we'll see them again as the next story centers around The Parliament.