THEY appeared, by and large, to be normal kids - right up until the moment they plotted to blow thousands of people into oblivion. "Outward impressions with certain people who have a disconnect, a fracture if you will, in their makeup don't necessarily mean a lot," said Dr. Allan Manevitz, a leading psychiatrist at Weill-Cornell Medical Center. "There are serial killers with mothers who love them and who love their mothers." The British terror suspects were soccer fans, and largely polite. One of them was Brian Young, 28, who changed his name to Umar Islam after converting two to three...