DAYTON, Ohio -- Visitors are able to see the Titan 4B during the Behind the Scenes Tours of the National Museum of the U.S. Air Force restoration hangars. The impressive Titan 4B, with roots going back to the early days of U.S. Air Force and civil space launch, is significant as the museum looks to share the story of USAF and USAF-enabled space operations in the Space Gallery in the new fourth building. (U.S. Air Force photo by Ken LaRock)