The above image is of one of the NEACP (pronounced "kneecap") aircraft. Operated by the USAF (and more recently by FEMA), NEACP stands for National Emergency airborne Command Post. The crews call it the "doomsday" plane.
Since 1973, the NEACP planes have been in position to coordinate a nuclear strike in the event of a major war. Via other command aircraft (such as the TACAMO planes, which communicate with the SSBN ballistic missile subs) NEACP can maintain control over the nuclear deterrent forces in the event ground based command authority is rendered inoperable.
Over the years, the NEACP has been subject to several upgrades, and many of the older airframes have been retired. According to one source, such a retired NEACP 747-200 provided the source material for the military explosives tests conducted on behalf of the TWA 800 "investigation". This would have yielded explosives-torn components in abundance.
Port
View: Click to download full size image. (147K).
Note that this aircraft is not used for regular passenger
service (unless you contributed $20,000 to the Clinton campaign).