"Uh?" Stan understands as much as he needs to. He understands that this thing is going to cut him off from his brother if it closes up much more, so without thought he steps forward, slipping the flashlight into a pocket, and ducks under the squares that look like they're about to close up in front of the entrance of the tunnel. He, of course, is plenty agile thank you very much, but that doesn't mean he knows where to step. "Ford? Did somethin' go wrong?"