The GIs called her Joey. Hundreds owed their lives to the tiny Filipina woman who was one of the top spies for the Allies during World War II, stashing explosives, tracking Japanese troop movements, and smuggling maps of fortifications across enemy lines for Gen. Douglas MacArthur. As the Battle of Manila raged, young Josefina Guerrero walked through gunfire to bandage wounds and close the eyes of the dead. Her valor