Flying Spaghetti Monster wrote:
(which we know Scotty can do, because he sets it to kill (red barrel) when he gets his phaser)
There was some line when they first boarded that the phasers can only be only set to stun. "There's won't be," Khan says.
What I can't figure out was the techno-babble line that prevented the Vengeance from firing on the Enterprise. Khan ends his explanation by saying "Which gives us the advantage."
I saw the movie again earlier this week and it goes something like this:
*Kirk gives Khan a phaser from the backpack*
Kirk: It's locked to stun.
Khan: Theirs won't be.
*Kirk and Scotty dialogue about Khan*
*Scotty's phaser barrel spins from blue (stun) to kill (red)*
Those last two parts might be concurrent.