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 Sr. Barack Obama Sr. Barack Hussein Obama Sr. (; 18 June 1936 – 24 November 1982) was a Kenyan senior governmental economist and the father of Barack Obama, the 44th President of the United States. He is a central figure of his son's memoir, "Dreams from My Father" (1995). Obama married in 1954 and had two children with his first wife, Kezia. He was selected for a special program to attend college in the United States and studied at the University of Hawaii. There, Obama met Stanley Ann Dunham, whom he married in 1961, and with whom he had a son,