Vostok

Discussing the investigation of NASA by the President's Science Advisory Committee, Gus Grissom asks, "So we're cooked?" This is another piece of grim foreshadowing of Grissom's ultimate fate.

Deke Slayton's grounding due to atrial fibrillation occurred almost a year later in real life than in this episode. Deke had been assigned the fourth crewed Mercury mission (Mercury-Atlas 7), was deep in training for the flight and had even named his spacecraft "Delta 7" before he was grounded on March 15, 1962.