* This is from the scene where Khan has caused Kirk (along with his son David, David's mother Carol, and his officers McCoy, Saavik, and Chekhov) to become appa

* This is from the scene where Khan has caused Kirk (along with his son David, David's mother Carol, and his officers McCoy, Saavik, and Chekhov) to become apparently marooned without hope of rescue inside an artificially habitable cave on an otherwise barren planetoid. The scream is (well, maybe not "is", as the entire explanation... but at least in some large part, not entirely unintended, is) meant to sell the idea that the Enterprise is too badly damaged to survive Khan's coming attack, and communicate Kirk's supposed anguish at the fulfillment of Khan's plan to maroon Kirk on a dead planet, as Kirk had previously left him and his wife (a highly debatable sentiment [0]). Spock is alive on the Enterprise, hiding on the other side of the planet from Khan, and dies later in the film, after retrieving Kirk and participating in the ensuing space battle. Right youtube link, though. You might be confused by it's counterpart in 'Star Trek: Into Darkness' (also represented by this service), where it's said by Spock on Kirk's death. ---- [0] but one which is explored more fully in a set of recent "prime universe" comics: http://memory-beta.wikia.com/wiki/Khan:_Ruling_in_Hell http://memory-beta.wikia.com/wiki/Khan:_Ruling_in_Hell