The Circle

The Circle of Steel is a covert splinter group of the Brotherhood of Steel, formed by the members of the BoS team that tested the unstable Stealth Boys.

History
In an effort to end the war with the New California Republic once and for all, the Brotherhood began to use newly discovered subversive technology known as StealthBoys. These devices could create a field of energy that would bend light around the user, thus making him virtually invisible to sight. This allowed Brotherhood operatives to penetrate deep into NCR territory for the gathering of intelligence. However, it was soon discovered that the devices had severe side effects. Paranoia, delusions, and eventual schizophrenia were the major ones. The Brotherhood disallowed the use of StealthBoys and once again fell behind in their war effort.

The side effects of these devices were not discovered until the team using them had already begun to feel their effect. When the team was disbanded, paranoia over the reason began to set in and the team plotted against their leaders. They stole the StealthBoys, fled the bunker as deserters, and formed a covert group known as the Circle of Steel. The goal of the COS is to recover lost technology and rebuild the glory of the Brotherhood at any cost.