sentences:  On 28 February, an army corporal was killed while inspecting an abandoned car rigged with an explosive charge in the city of Famaillá.Three months of constant patrolling and 'cordon and search' operations with helicopter-borne troops, soon reduced the ERP's effectiveness in the Famaillá area, and so in June, elements of the 5th Brigade moved to the frontiers of Tucumán to guard against ERP and Montoneros guerrillas crossing into the province from Catamarca, and Santiago del Estero.On 11 May, an Army NCO was killed during a fierce exchange of fire with guerrillas on Route 301 in Tucumán.