Former National Security Adviser Samuel R. Berger, fined $50,000 for taking classified documents from the National Archives, hid the papers under a construction trailer where they later could easily be retrieved, a report yesterday said. The National Archives Office of Inspector General said that during a 2003 visit to the facility, Mr. Berger left the building unescorted for a break, during which time he "placed the documents under a trailer in an accessible construction area outside Archives 1 (the main Archives building)." The report said Mr. Berger acknowledged that he later retrieved the documents from the construction area and brought...