From 1943 until the unit's desegregation in 1958, the West Area Computing Unit at NASA's Langley Research Center in Hampton, Virginia, employed a group of Black women mathematicians whose job title was, simply, "computer." They calculated by hand the aerodynamic data, wind-tunnel readings, and flight trajectories that made possible the American aeronautical and space programs of the 1950s and 1960s. Their work was segregated — they ate in a separate dining room, used separate bathrooms, and were barred from editorial meetings — and it was, simultaneously, indispensable.
Katherine Johnson, who joined West Computing in 1953, is the best known of them. Her trajectory calculations verified the IBM computer's output for John Glenn's 1962 Friendship 7 mission; Glenn is said to have refused to fly until "the girl" had checked the numbers. Johnson went on to compute trajectories for Apollo 11 and for the lunar module's return-to-orbit rendezvous in 1969. She received the Presidential Medal of Freedom in 2015, at the age of ninety-seven.
Dorothy Vaughan became the first Black supervisor at NACA (NASA's predecessor) in 1949 and, recognizing that electronic computing would eventually replace the human computers, taught herself and her team FORTRAN in order to transition their unit into the new era. She retired in 1971 having remapped her own obsolescence into survival.