AVIE, Fla., Sept. 15 (AP) — Insisting that he and his friends harbored no resentment, one of the three Muslim medical students detained in a terror scare on a Florida highway said today that the situation had been a misunderstanding.The student, Kambiz Butt, 25, said the men simply wanted to clear their names and be allowed to continue their education in the United States."We're medical students; we are not terrorists," said Mr. Butt, flanked at a news conference by the other students, Ayman Gheith, 27, and Omar Choudhary, 23. "Our concern in life is to become doctors. We want...