"Nearly every foreign group working in Iraq has felt it necessary to hire a PSD, or "personal security detail," from more than sixty "private military firms" (PMFs)—Triple Canopy, Erinys International Ltd., and Blackwater USA—now doing a brisk business in Iraq. In fact, there are now reported to be at least 25,000 armed men from such private firms on duty in the country today. Led mostly by Brits, South Africans, and Americans, these subterranean paramilitary PSDs form a parallel universe to America's occupation force. Indeed, they even have their own organization, the Private Security Company Association of Iraq."