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
Family of Barack Obama and began dating Barack Sr. in Cambridge in June 1964, a month before his return to Kenya in August 1964. She followed Obama Sr. back to Kenya five weeks later, and married him in Kenya in a civil ceremony on December 24, 1964. She later became a private kindergarten director in Kenya. She had two sons with Barack Obama Sr.: Mark and David. She and Barack Sr. separated in 1971 and divorced about 1973. Since she remarried when her sons were young, they took their stepfather's surname, Ndesandjo, as their own. Her third son, Joseph Ndesandjo, was born c. 1980