MANAGUA, Nicaragua — The classical definition of a hero is a person who puts himself at risk for the benefit of others. That certainly describes Adolfo Calero, who died June 2 at the age of 80. The obituaries of this remarkable man hardly do justice to his courage, perseverance, faithfulness and humility. Here is the Adolfo Calero I knew, admired and called a friend for nearly three decades: A graduate of Holy Cross High School in New Orleans and the University of Notre Dame in South Bend, Ind., he was a devout Roman Catholic and educated to be a...