The level of violence declined from 1972 onwards, decreasing to under 150 deaths a year after 1976 and under 100 after 1988. The Provisional IRA, using weapons and explosives obtained from the United States and Libya, bombed England and various British army bases in Europe, as well as conducting ongoing attacks within Northern Ireland. These attacks were not only on "military" targets but also on commercial properties and various city centres. Arguably its signature attack would involve cars packed with high explosives. At the same time, loyalist paramilitaries largely (but not exclusively) focused their campaign within Northern Ireland, ignoring the uninvolved military of the Republic of Ireland, and instead claiming a (very) few republican paramilitary casualties. They usually targeted Catholics (especially those working in Protestant areas), and attacked Catholic-frequented pubs using automatic fire weapons. Such attacks were euphemistically known as "spray jobs". Both groups would also carry out extensive "punishment" attacks against members of their own communities for a variety of perceived, alleged, or suspected crimes.