May 20 — The government will launch a wide-ranging program of polygraph testing to determine if one of its own employees is responsible for last year's anthrax attacks, ABCNEWS has learned. As many as 200 current and former employees at Fort Detrick in Maryland, the Dugway Proving Ground in Utah and a number of other labs across the nation will face questioning and voluntary polygraph tests in the hope that one of them might produce a lead. Sources told ABCNEWS those targeted include people who have expertise in the production of anthrax or have had access to it. "In the...