The Perseus is one of the newer additions to the SroA's armoury after the beginning of the current wars. While not the only means to deal with flying threats, the Perseus was developed specifically to combat the new prevalence of enemy planes, that the arrival of the Principality back on earth has brought with it. The Perseus is outfitted with 80 Seeker Missiles, capable of crippling most enemy aircraft in short order. Additionally the Perseus has two rotary Machineguns to deal with targets not worth wasting missiles on.
The Perseus being a bigger installation can be found mostly around fortified military complexes of the Republic, be they in the Border regions or in the Heartlands of the Mediteranean.