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 on social media politics. Some included a more lighthearted focus, like the recipe for the White House beer. In response to Obama's use of Reddit, many noted the bypassing of generally established channels of mainstream media in use during the 2012 campaign in favor of less-filtered and closer forms of communication. When asked why Obama logged on to Reddit, one campaign official responded "Because a whole bunch of our turnout targets were on Reddit." By using a newer, underused media channel like Reddit, Obama's campaign acknowledged a largely unaddressed demographic of unlikely voters on social internet boards. Barack Obama on social media The