Dennis Reidenbach '76 served as the Deputy Park Superintendent for the Independence National Historical Park in Philadelphia, Pa and shares his recollection of 9/11.  He served between 2007 and 2014 as the Northeast Regional Director of the National Park Service, including the responsibility to oversee the formation of the Flight 93 memorial.  Listen in to learn about him getting to know the surviving family members of the heroic passengers and crew from Flight 93.