U.S. authorities will suspend a rule that has kept airline passengers in their seats for 30 minutes while approaching or taking off from Reagan National Airport, Homeland Security Secretary Michael Chertoff announced yesterday as he unveiled a broad reorganization of his fledgling department. The unpopular 2001 restriction has been rendered obsolete by security improvements, including hardened cockpit doors and armed federal air marshals aboard Washington flights, Chertoff said. Full Story