Area 51 YF-117A. At 6:05 am on 18 June 1981 Lockheed Skunk Works test pilot Hal Farley lifted the nose of YF-117A "79–780"' off the runway of Area 51. Meanwhile, Tactical Air Command (TAC) decided to set up a group-level organization to guide the F-117A to an initial operating capability. That organization became the 4450th Tactical Group (Initially designated "A Unit"), which officially activated on 15 October 1979 at Nellis AFB, Nevada, although the group was physically located at Area 51. The 4450th TG also operated the A-7D Corsair II as a surrogate trainer for the F-117A, and these operations continued until
Minnesota State Highway 51 Roseville and Arden Hills was built as a divided highway by 1970. Minnesota State Highway 51 Minnesota State Highway 51 (MN 51) is a highway in Minnesota, which runs from its intersection with State Highway 5 (W. 7th Street) in Saint Paul and continues north to its northern terminus at its interchange with Interstate 694 / U.S. Highway 10 in Arden Hills. The route is in length. Highway 51 is also known as Snelling Avenue for most of its route. A small section of the route is known as Montreal Avenue in the "West Seventh" and Highland neighborhoods of Saint