 A hearing held before the United States House of Representatives in 1977 verified that no such license had been granted, and that two former Cadillac Gage employees had been prosecuted for illegally transferring the technical knowledge for the Commando design to Bravia.The first prototype Chaimite appeared in 1966, and was designed primarily for direct fire support, with a large turret ring and braced chassis to carry a 90mm low-pressure cannon.In 1968 or 1969 the prototype was sent to Portuguese Guinea for combat trials, where it performed well but was later destroyed by African Party for the Independence of Guinea and Cape Verde (PAIGC) insurgents with an RPG-2 or RPG-7.