1. 
   B-1B
   (from the article `B-1`) ...by Rockwell International. The B-1A, first flown in 1974, was designed to reach twice the speed of sound at high altitudes and to carry nuclear ... ...electronic countermeasure (ECM) equipment designed to jam or deceive enemy radars. They could deliver free-fall conventio...
   Found op http://www.britannica.com/eb/a-z/b/1
   
   
2. 
   B-1B
   The Rockwell B-1B Lancer is an American multi-role, long-range bomber, designed as a replacement for the B-52 and capable of flying inter-Continental missions without refuelling, then penetrating present and predicted sophisticated enemy defences. It can perform a variety of missions, including that...
   Found op http://www.probertencyclopaedia.com/browse/IB.HTM
   
   

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