From the blog of Legal Times:
Arnold, appointed to the Eighth Circuit in 1992, will serve as the presiding judge of the Foreign Intelligence Surveillance Court of Review until the remainder of his term, which expires in May 2015. Arnold replaces Judge Bruce Selya of the U.S. Court of Appeals for the First Circuit, whose term on the surveillance appeals court ends Friday..
The three-judge Foreign Intelligence Surveillance Court of Review hears government appeals from the lower Foreign Intelligence Surveillance Court. The surveillance court, based in the E. Barrett Prettyman U.S. Courthouse in Washington, examines national security wiretap applications from the government. The lower court’s proceedings, like the appeals court, are secret. Public rulings are rarely issued
The court was established in 1978 but never used until 2002.