Transportation Secretary Federico Pena has ordered security tightened at airports across the country after Sunday's conviction of Sheik Omar Abdel Rahman and nine others for conspiring to blow up the World Trade Center. "With the sheik in jail -- and now convicted -- he could be an even more important symbol to radical fundamentalists who are inclined toward violence," says TIME's William Dowell, who interviewed Rahman in jail in New York last week. Dowell says many fundamentalist Egyptians see the U.S. -- with its almost $3 billion in mostly military aid to Egypt -- as complicit in the recent wave of government-supported repression in their country. "As the Egyptian government becomes more violent, the radicals' response become more violent. And the U.S. is attached to it because of the aid, but we have no real influence over the Mubarak government on this subject."