The Pentagon plans to award a highly coveted, multibillion-dollar Air Force tanker contract by year's end, a senior Defense Department acquisition official said this afternoon. Shay Assad -- principal adviser to DOD's top weapons buyer, John Young -- briefed reporters today on the aggressive KC-X rebid schedule DOD plans to keep. Defense officials also released a new draft request for proposals to industry today. Sources say the document was originally scheduled to come out this Friday (Aug. 8). "We now...