Veterans Day is coming up, but there are few vets who have a story to tell like Mario Avignone.His life was changed during World War II when he was stationed near the monastery inhabited by St. Pio of Pietrelcina. Avignone, a salt-of-the-earth Chicagoan, and two fellow soldiers befriended the stigmatic miracle worker. Since then, he expresses his devotion to the saint by sharing his experiences with others, visiting the sick, and praying with the aid of relics.After a talk Avignone gave at St. Mary of the Angels Church on the city’s North Side, the 90-year-old veteran, over a meal...