In one part of the book, Ben, Megan, and Sam are trapped in a cave. Right after Sam gets the gas masks for each of them, the enemies outside throw in the gas bombs. Then they explode the cave entrance, having it crumble and close it off. Ben then has to dig at the rocks to make a small hole for them to crawl through, to escape the cave. Soon after they get out though, Ben is shot and awakens in some sort of coma -like dream and is talking with a silencer.