First flight 05 October 1992; used for low-observable comparison with AV-1; to McKinley Climatic Laboratory, Eglin AFB, FL, for 6 months of environmental tests; modified to B-2A-30-NO standard and used as an operational aircraft. Delivery to 509th BW on 18 July 1997. Named Spirit of Ohio on 18 Jul 1997. 14th operational aircraft.