On October 30 , 1950 , there was an attempt by a few nationalists to enter La Fortaleza in what is known as the San Juan Nationalist revolt , intending to attack then-governor Luis Muñoz Marín . The 5-minute shootout resulted in four Nationalists dead : Domingo Hiraldo Resto , Carlos Hiraldo Resto , Manuel Torres Medina and Raímundo Díaz Pacheco . Three of the guards of the building , among them Lorenzo Ramos , were seriously injured
San Juan Nationalist revolt
San Juan Nationalist revolt
La Fortaleza