Bunker Alpha is the main base of operations of the Brotherhood of Steel. Located in the area of the former city of Chicago, Illinois, it was formed some time after the Brotherhood airships crashed there. In time, the Brotherhood established a harsh rule over the towns and tribal villages in that area, controlled from Bunker Alpha. General Simon Barnaky was stationed here, before moving to Bunker Beta. It is here the Warrior begins his career in the Brotherhood, and here begins the destruction of the raiders in the Chicago region.