As U.S. intelligence and law enforcement agencies try to prevent the next terrorist attack, they have a basic problem to solve: how to spell the enemy`s name. Computerized databases at the FBI, CIA Immigration and Naturalization Service and other agencies bulge with lists of suspected terrorists. Some of the names identify actual terrorists. Others are aliases, misspellings, alternative spellings or misidentifications of putative bad guys. And without extensive fieldwork, there is no way to tell them apart. Full Story