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 born in 1640 in the Massachusetts Bay Colony, was one of Obama's maternal eighth great-grandfathers and is his earliest ancestor known to be born in North America. Obama's family in Kenya are members of the Luo people, the nation's second-largest ethnic group. Linguistically, Luo is one of the Nilotic languages. The Obama family is concentrated in the western Kenyan province of Nyanza. Paternal grandfather to Barack Obama, he was born Onyango Obama. (One source gives 1870–1975 as his dates of birth and death, possibly based on his tombstone in his home village. Barack Obama relates finding in 1988 a British