article_snippet: In one episode, "Arena," the Enterprise engages in battle with an alien vessel, flown by the Gorn, that has attacked an Earth colony.
article_snippet: In the heat of the battle, another unknown species, the Metrons, transports Kirk and the Gorn captain to a barren planet.
article_snippet: Kirk and the Gorn captain are told that because of Kirk and the Gorn captain violent tendencies, Kirk and the Gorn captain must battle to the death, with the ship and crew of the loser to be destroyed.
article_snippet: As the two captains battle, the Metrons project the scenes onto the Enterprise's main view screen on the bridge.
article_snippet: As the crew observes the battle, and thinks more about it, Spock realizes that an Earth colony may have been the invader, and the Gorn vessel may have been justified in an Earth colony attack on an Earth colony.
article_snippet: When Kirk finally subdues the Gorn captain, Kirk decides to show Kirk mercy and spare Kirk life, even though it may result in the destruction of the Enterprise and her crew.