On January 31, 2008, the Smithsonian’s National Air and Space Museum announced a gift of $15 million from D. Travis and Anne Engen. This gift will be used for phase two of the Steven F. Udvar-Hazy Center to build the “Mary Baker Engen Restoration Hangar” and create an endowed fund to support future renovation of the facility.
The restoration hangar is planned for a new wing to be added beside the existing aviation and space hangars of the Steven F. Udvar-Hazy Center near Dulles International Airport outside of Washington. It is designed to provide work space for the restoration, preservation and treatment of aircraft and spacecraft. The facility will be glass-enclosed, allowing visitors to view the aircraft being restored.