 While Massera was not injured, the yacht was badly damaged by the explosives.In January 1976, the son of retired Lieutenant-General Julio Alsogoray, Juan Alsogaray (El Hippie), copied from his father's safe a draft of "Battle Order 24 March" and passed it to the head of the Montoneros intelligence, Rodolfo Walsh, who informed the guerrilla leadership of the planned military coup.Private Sergio Tarnopolsky, serving in the Argentine Marine Corps in 1976, also passed on valuable information to Walsh regarding the tortures and killings of left-wing guerrillas taking place in ESMA.