In 2267 in a parallel universe, Captain Kirk ordered Scotty, both of whom were trying to return to their own universe, to disable the main phaser couplings on the ISS Enterprise, in an attempt to stop the destruction of the Halkan homeworld. (TOS: "Mirror, Mirror" ) When the Delta Flyer was disabled inside a graviton ellipse in 2376, the crew attempted to reroute power from the phaser couplings. (VOY: "One Small Step")