BIG FORCE MASSES TO BLOCKADE CUBA; Armada Is Under Orders to Open Fire if Necessary-- All Troops Are Alerted U.S. Assembled Massive Military Force in the Carribbean to Impose the Blockade MORE NAVAL UNITS JOIN PATROL SHIPS Pentagon Confident It Can Carry Out Order--Families to Leave Base in Cuba
US Defense Dept repts dependents of Guantanamo base troops evacuated, forces there doubled