Originally, the actor scheduled to play Fajo was David Rappaport star of "The Wizard". However, Rappaport attempted suicide after two days of filming and was hospitalized. Shortly afterward, he sadly died as a result of a second attempt.
	The episode's shuttlepod "Pike" was the first named for a fictional person, in this case Kirk's predecessor seen in Trek pilot "The Cage".
	The Varon-T disruptor is the same weapon used by Sovak in "Captain's Holiday".
	Fajo's lapling was a puppet created by makeup designer Michael Westmore.

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