B.S.A.A is mostly as i understood takes huge part of global interfere operations and tries to destroy the most of infection and to stop Umbrella. I would call this faction United Nation faction. So how does mostly this would go out? Give out stuff for survivors, and provide security. Just be like, sort of United States Marine Force, and survivor supporter. How they would get the supplies? The cargos of San Fierro Shipment. They should have a truck that could load up with supplies that OSF has. Once the truck is loaded, they can trade it to survivors, give them stuff. So yeah, supporter faction and security/fast operation and fighting objective is what i believe this faction should be all about.