Complex sentence: Although he retired from daily reporting on November 5,2004, Hager continued to file occasional reports for NBC News, including returning to the air to help cover the 2006 coal mine disaster in West Virginia.
Split into simpler sentences: Although he retired from daily reporting on November 5,2004, Hager continued to file occasional reports for NBC News. He returned to the air to help cover the 2006 coal mine disaster in West Virginia.