Amtrak No. 917 is an AEM-7 type electric locomotive built in collaboration by Electro-Motive Diesel (EMD) and ASEA in 1981 for the National Railroad Passenger Corporation, also known as Amtrak. It was used in high-speed passenger service on the electrified Northeast Corridor between Washington DC and Boston, MA. In the early 2000s, it was one of 29 of Amtrak's AEM-7 locomotives converted from DC traction to AC traction. When Amtrak began replacing their AEM-7 locomotives with ACS-64 locomotives in February 2014, it was officially retired from service and initially placed in storage in Bear, DE.
In August 2023, it was acquired by the Danbury Railway Museum in Danbury, CT and later arrived at the museum on June 7, 2024. As of today, it now remains on static display at the Danbury Railway Museum and is also currently one of four AEM-7 locomotives surviving in preservation, the others being Amtrak No. 915 at the Railroad Museum of Pennsylvania in Strasburg, PA, Amtrak No. 927 with the Northeast Rail Heritage Inc., and Amtrak No. 945 at the Illinois Railway Museum in Union, IL. It is also the first AC traction converted AEM-7 locomotive surviving in preservation.