First off, let me say I love the character of John Corey & hope to see a lot more of him. But I was so frustrated at the weak ending. Some reviewers have praised it, but I was unhappy with it. Despite the realism of the novel, this is a novel after all & the reader deserves better. We never know who set the rocket off & why, or why the government (or rather some elements of it) are covering it up. Subsuming it all under 9/11 is a dirty trick on the reader. Most readers, if they are paying attention to the dates, will figure out fairly easily that 9/11 is coming soon, but that's no excuse for not providing a suitable conclusion.