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10 January 2004
Maps from Mapquest.com
Source of photo:
http://seamless.usgs.gov
The Presidential Marine Helicopter 1 (HMX 1) Hangar area is surrounded by a high-security perimeter fence, with single point of entry. The double fencing, and probably motion sensors in-ground and in the cabling, is constructed of straight segments to allow tightly-stretched cabling for signaling tampering, motion and vibration. Land-based security is likely supplemented with aerial, marine and electromagnetic surveillance and countermeasures, especially against MANPADS.
Compare to security of the Presidential Air Force 1 bunker:
http://eyeball-series.org/af1big-eyeball.htm
Previous HMX 1 Hangar eyeball:
http://eyeball-series.org/hmx1-eyeball.htm
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