More than 250 Christian fundamentalists, stranded five days at Moscow's Sheremetyevo airport in a bureaucratic mix-up, have their papers in order and can leave as soon as airlines can seat them, U.S. Embassy officials said Friday. The fundamentalists, mostly Pentecostals, were seeking to emigrate to America and had the proper Soviet exit visa and permission to enter the United States. The problem arose because most Pentecostals and the fundamentalists do not have close relatives in the United States, a prerequisite for normal emigration. Instead, they are regarded as special refugees, a status the Soviet Union does not normally recognize.