Al Harrison

Harrison smashes the "Colored Ladies Room" sign with a crowbar and declares that NASA "all pee the same color," instantly ending the facility's segregated bathroom policy. Rather than convening a committee or writing a memo, he resolves the problem with blunt efficiency, similar to how he addresses faulty equipment. His motivation stems from practical frustration: the long walk wastes his top mathematician's time and productivity.

Harrison's primary motivation is mission success—specifically, getting an American astronaut into orbit before the Soviet Union does. Every decision he makes, including dismantling discriminatory barriers, flows from this focus on results and deadlines. Shetterly uses him to illustrate how the pressure of the Space Race can inadvertently drive institutional change, even without a moral awakening.

Harrison serves as Katherine's direct supervisor and becomes her most crucial institutional ally throughout the book. He assigns her to the Space Task Group, insists she be included in previously excluded classified briefings, and defends her participation in high-level meetings. Without his support, the bureaucratic and racial obstacles at Langley would likely have hindered Katherine's access to the work that made her indispensable.

Vivian Mitchell enforces segregationist office norms not necessarily out of personal conviction but out of institutional habit, and Harrison's directives consistently override her gatekeeping. This dynamic demonstrates that entrenched social customs can be fragile when confronted by genuine positional authority. Shetterly contrasts the two to highlight how top-down power can disrupt the discrimination perpetuated by mid-level administrators.

Harrison's judgment is confirmed when Glenn refuses to trust the IBM computer's trajectory data and insists that Katherine Johnson verify the figures by hand before he will agree to launch. Harrison had already positioned Katherine at the centre of the task group's calculations, and Glenn's demand reaffirms that decision at a critical moment in the early space programme. Her hand-checked numbers become the basis of trust for Glenn and, by extension, the nation.

No—Shetterly portrays Harrison as an accidental, rather than principled, agent of integration. He dismantles discriminatory practices due to their interference with efficiency, not from a moral crusade. This makes him more effective than colleagues who espouse progressive values while quietly upholding discriminatory norms. However, Shetterly invites readers to consider whether pragmatic allyship is enough or if it reveals the limits of change driven by self-interest rather than justice.

Harrison evolves from an authority figure unaware of the systemic challenges facing Katherine and her colleagues to a leader who actively dismantles some of those barriers—though primarily for operational reasons. His transformation reflects a growing recognition that racism wastes precision and time. By the Glenn mission, his earlier meritocratic decisions have reshaped the task group's inner circle and, to a degree, NASA's institutional culture.