Montgomery Scott resigns as Chief Engineer of the USS Enterprise (Star Trek Into Darkness)

When they get on board the USS Enterprise, Spock heads immediately to the bridge, while Captain Kirk talks with Scotty in engineering. Scotty is unwilling to allow the photon torpedoes on-board, because he cannot examine the shielded devices, and the Section 31 personnel refuse to tell him what they are fueled by. He does not want to risk firing unknown weapons around the warp core; any instability could wreck it and kill everyone on board. He is also upset that his transwarp equation was appropriated by Starfleet Command, ending up in John Harrison's hands for his crime spree. When Kirk insists the torpedoes be loaded in, Scott resigns, with Keenser following suit. Scotty begs Kirk not to use the torpedoes before he departs.