…there was a fierce behind-the-scenes battle between them to be first to set foot on the Moon. Early plans were for Aldrin, as module pilot, to step out first, but one version reported by Smith has it that Armstrong, as mission commander, lobbied more vigorously than Aldrin, and Nasa backed him up because he would be ‘better equipped to handle the clamour when he got back’ and, more mundanely, because his seat in the lunar module was closer to the door. Aldrin paid Armstrong back by taking no photographs of him on the Moon: the only manually taken lunar image of the First Man on the Moon is in one of many pictures Armstrong snapped of Aldrin, showing himself reflected in the visor of Aldrin’s spacesuit.
…they were on the same basic pay rates as other US military officers: most were captains, making about $17,000 a year. (On their missions to the Moon, they were entitled only to the standard $8 per diem for being away from base, with deductions for ‘accommodation’ provided in the spaceship.)