ARCHIMEDES II

 is a deadly super laser inside Helios One in Fallout: New Vegas.

You can either kill Fantastic, NCR's tech, gaining control of the laser for yourself, or assist him in fixing it, which increases your Reputation with the NCR faction.

Characteristics
The weapon draws power from a solar reactor that's also linked to Vegas' power supply. Firing it will cause a massive shockwave to echo forth from the tower. If you fix the laser, you will receive a Portable laser beacon which can be used to call in a laser airstrike.

Appearances
appears in Fallout: New Vegas.