Area 51 providers (including Russian providers and the IKONOS) are commercially available. These show the runway markings, base facilities, aircraft, and vehicles. When documents that mention the Nevada Test Site (NTS) and operations at Groom are declassified, mentions of Area 51 and Groom Lake are routinely redacted. One exception is a 1967 memo from CIA director Richard Helms regarding the deployment of three OXCART aircraft from Groom to Kadena Air Base to perform reconnaissance over North Vietnam. Although most mentions of OXCART's home base are redacted in this document, as is a map showing the aircraft's route from there to Okinawa, the
Minnesota State Highway 51 Avenue. State Highway 51 serves as a north–south route between Saint Paul, Falcon Heights, Roseville, and Arden Hills in Ramsey County. It is not to be confused with nearby Ramsey County Road 51 (Lexington Avenue / Parkway), which runs parallel to State Highway 51 and ends at the same southern terminus intersection. Highway 51 begins at its intersection with State Highway 5 (W. 7th Street) in the "West Seventh" neighborhood of Saint Paul. 51 follows Montreal Avenue for 10 blocks. 51 then leaves Montreal Avenue and turns north on Snelling Avenue. Highway 51 remains on Snelling Avenue for the remainder