In the late 1970s, former military prosecutor and Turkish Supreme Court Justice Emin Değer documented collaboration between the Grey Wolves, the Central Intelligence Agency (CIA), and Counter-Guerrilla, the Turkish stay-behind anti-communist organization organised under NATO's Operation Gladio, a plan for guerrilla warfare in case of a communist takeover. Martin Lee writes that the Counter-Guerrilla supplied weapons to the Grey Wolves, while according to Tim Jacoby, the CIA transferred guns and explosives to Grey Wolves units through an agent in the 1970s.