1954-95. U.S. Undercover agents have worked for decades inside a Guatemalan army unit that has tortured and killed thousands of Guatemalan citizens, per the Nation weekly magazine. „working out of the U.S. Embassy and living in safe houses and hotels, agents work through an elite group of Guatemalan officers who are secretly paid by CIA and implicated personally in numerous political crimes and assassinations unit known as G-2 and its secret collaboration with CIA were described by U.S. and Guatemalan operatives and confirmed by three former Guatemalan heads of state. Colonel Julio Roberto Alpirez, Guatemalan officer implicated in murders of guerrilla leader Efrain Bamaca Velasquez — husband of an American lawyer — and rancher Michael Devine discussed in an interview how intelligence agency advises and helps run G-2. He said agents came to Central American country often to train G-2 men and he described attending CIA sessions at G-2 bases on „contra-subversion“ tactics and „how to manage factors of power“ to „fortify democracy“ the Nation quoted U.S. and Guatemalan intelligence sources as saying at least three recent G-2 chiefs have been on CIA payroll