Boeing C-137 Stratoliner procurement of the Boeing 707 was very limited, amounting to three Model 707-153s designated VC-137A. When delivered in 1959 these had four 13,500 lb (6123 kg) dry thrust Pratt & Whitney J57 (JT3C6) turbojets; when subsequently re-engined with 18,000 lbf (80.1 kN) dry thrust TF33-P-5 (JT3D) turbofans they were redesignated VC-137B. Only one other variant served with the USAF: this was the VC-137C "Air Force One" presidential transport, the two examples of which were Model 707-320B Intercontinentals with specialized interior furnishings and advanced communications equipment. Two further non-presidential C-137C aircraft were later added. To supplement its VC-137s, the USAF converted
Barack Obama 2008 presidential primary campaign on YouTube within a day of the speech's delivery. Links to the speech were among the most widely shared on Facebook, and by March 27, the speech had been viewed nearly 3.4 million times. During a time when Obama was receiving negative attention from the Wright controversy and other issues, "The Empire Strikes Barack" was released, a video that featured Barack Obama as Luke Skywalker, rallying from attacks by Hillary Clinton, portrayed as Darth Vader. Obama has taken positions on many national, political, economic and social issues, either through public comments or his senatorial voting record. One such position is