The Emperor: [In the throne room, Luke is watching the Imperial fleet attack the Rebels from the huge throne room window] As you can see, my young apprentice, your friends have failed. Now witness the firepower of this fully ARMED and OPERATIONAL battle station!
[the Emperor hits the comlink switch on his throne]
The Emperor: Fire at will, Commander!
Moff Jerjerrod: [In the Death Star's firing room, a group of hooded Imperial gunners starts priming the Death Star's superlaser - a device so advanced it can be trained on capital ships, such as the Rebel aircraft carriers. A series of tones signify that the weapon is ready] Fire!
[a second gunner hits a switch, and a huge laser beam roars down a firing shaft. The outer surface of the Death Star shows a huge laser dish start to develop, and then a titanic laser beam moves out from the Death Star's superlaser. It hits the Rebel Calamari Cruiser 'Liberty' and vaporizes the huge carrier in less than a second]