|The Rockwell B-1 Lancer|
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|The Rockwell B-1 Lancer is a four-engine variable-sweep wing strategic bomber used by the United States Air Force. First envisioned in the 1960s as a supersonic bomber with sufficient range and payload to replace the Boeing B-52 Stratofortress, it developed primarily into a low-level penetrator with long range and supersonic speed capability at high altitude.|
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April 8, 2012.