Project Camelot has posted an interview with an airplane engineer, pseudonym “Fred,” who mistakenly entered the mile-long hangar used to film a part or all of the landing on the moon.
He went inside, following directions which he’d misconstrued, looking for airplane parts to fix a plane.
He left immediately and was accosted by security guards. Upon questioning, he said he had not entered the hangar.
Later, when the moon landing occurred, he realized that the scene he was watching was the same as the one inside the hangar.