June 29, 2002, 12:07AM 28 Nabbed by Feds at Fort Worth site Some may have ties to extremist group By DEANNA BOYD Copyright 2002 Fort Worth Star-Telegram FORT WORTH -- Federal agents raided an aviation repair facility at Fort Worth Meacham Airport on Friday morning, arresting 28 workers on immigration violations. Some of them, sources said, may be affiliated with a Muslim extremist group responsible for a string of kidnappings in the southern Philippines. Kathy Colvin, a spokeswoman with the U.S. attorney's office for Northern Texas, said federal felony charges will be filed Monday against some of the detained mechanics,...