Federal authorities expect to file terrorism charges soon against a detained Pakistani man with ties to the shipping industry and links to a senior al Qaeda leader, law enforcement officials said yesterday. Uzair Paracha, 23, has been secretly detained as a material witness since his arrest March 31 in the offices of a New York clothing import firm owned by his father, sources said. Authorities believe the Paracha family business may have been used as cover for attempts to smuggle al Qaeda operatives or weapons into the United States, according to several sources familiar with the case. Paracha's father, who...