You may have recently seen Todd Douglas Miller’s Apollo 11 documentary, featuring archival film from the National Archives’ National Aeronautics and Space Administration (NASA) holdings. The film footage of Apollo 11 makes the July 16, 1969 launch and subsequent Moon landing look like a breeze. But the years leading up to the launch were full of rigorous training exercises and mock run-throughs performed by the Apollo 11 prime and back-up crews. The astronaut activities featured in the Apollo 11 documentary were meticulously rehearsed to ensure a successful mission, and in true NASA fashion of the time, much of this was captured on film.