Secrets of the Black World 8

U.S. government's positions on Area 51

On July 14, 2003 the Federal Government admitted the facility's existence, tacitly conceding that the Air Force has an "operating location" near the lake, but does not provide any further information.

Unlike much of the Nellis range, the area surrounding the lake is permanently off-limits both to civilian and normal military air traffic. Radar stations protect the area, and unauthorized personnel are quickly expelled. Even military pilots training in the NAFR risk disciplinary action if they accidentally stray into the exclusionary "box" surrounding Groom's airspace.

Perimeter security is provided by uniformed private security guards working for EG&G's security subcontractor Wackenhut, who patrol in desert camouflage Jeep Cherokees and Humvees, and more recently, champagne-colored Ford F-150 pickups and gray Chevy 2500 4X4 pickups. Although the guards are armed with M16s, no violent encounters with Area 51 observers have been reported; instead, the guards generally follow visitors near the perimeter and radio for the Lincoln County Sheriff. Deadly force is authorized if violators who attempt to breach the secured area fail to heed warnings to halt. Fines of around $600 seem to be the normal course of action, although some visitors and journalists report receiving follow-up visits from FBI agents. Some observers have been detained on public land for pointing camera equipment at the base. Surveillance is supplemented using buried motion sensors and by HH-60 Pave Hawk helicopters.

The base does not appear on public U.S. government maps; the USGS topographic map for the area only shows the long-disused Groom Mine. A civil aviation chart published by the Nevada Department of Transportation shows a large restricted area, but defines it as part of the Nellis restricted airspace. The official aeronautical navigation charts for the area show Groom Lake but omit the airport facilities. Similarly the National Atlas page showing federal lands in Nevada does not distinguish between the Groom block and other parts of the Nellis range. Although officially declassified, the original film taken by U.S. Corona spy satellite in the 1960s has been altered prior to declassification; in answer to freedom of information queries, the government responds that these exposures (which map to Groom and the entire NAFR) appear to have been destroyed. Terra satellite images (which were publicly available) were removed from web servers (including Microsoft's "Terraserver") in 2004,[29] and from the monochrome 1 m resolution USGS data dump made publicly available. NASA Landsat 7 images are still available (these are used in the NASA World Wind). Higher resolution (and more recent) images from other satellite imagery providers (including Russian providers and the IKONOS) are commercially available. These show, in considerable detail, the runway marking, base facilities, aircraft, and vehicles.

Nevada's state government, recognizing the folklore surrounding the base might afford the otherwise neglected area some tourism potential, officially renamed the section of State Route 375 near Area 51 "The Extraterrestrial Highway", and posted fancifully illustrated signs along its length.

Although federal property within the base is exempt from state and local taxes, facilities owned by private contractors are not. Area 51 researcher Glenn Campbell claimed in 1994 that the base only declares a taxable value of $2 million to the Lincoln County tax assessor, who is unable to enter the area to perform an assessment.