U.S. sends nuclear-proof Boeing 747 'Doomsday plane' to U.K. for THIS reason
The E-4B, a militarised version of the Boeing 747-200, is a quad-engine, swept-wing, long-range high-altitude aircraft capable of refuelling in flight.
Source: india.com
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The E-4B, a militarised version of the Boeing 747-200, is a quad-engine, swept-wing, long-range high-altitude aircraft capable of refuelling in flight.