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 complications caused by cancer and respiratory problems. Half-uncle of Barack Obama, born c. 1950s in Nyang'oma Kogelo; son of Onyango and his third wife Sarah Obama. Half-uncle of Barack Obama, born c. 1950s in Nyang'oma Kogelo; son of Onyango and his third wife Sarah Obama. Barack Obama has called his wife Michelle Obama "the most quintessentially American woman I know." Her family is of African-American heritage, descendants of Africans and Europeans of the colonial era and antebellum eras. Michelle Obama's family history traces from colonists and slavery in the South to Reconstruction to the Great Migration to northern cities, in