1965: TOS USAF and assigned to the 9th Strategic Reconnaissance Wing, Beale AFB, CA. Ca.1990: TOS NASA with s/n 83. 1991: Dryden Research Center, Edwards AFB, CA, where it remained in operation until making its last flight in October 1997; it was used for training and not research. 1999: Placed in flyable storage. 28 Mar 2003: Kalamazoo Aviation History Museum, Kalamazoo, MI.