Laser Kill

Laser Kill is a Medal awarded in Halo 3 for killing an enemy with the Spartan Laser weapon, awarded for any kill with the Laser due to the unwieldy charge time and precise accuracy it takes to destroy a target with the weapon. It is represented by an gray octagon with a black circle that in turn has a red dot in the center. As this medal is awarded, a message appears on the screen, saying "You lasered (player)".

Trivia
This medal bears a strong resemblance to Hal 9000's viewing port; it has a dark circle with a single red dot in the center.