My college roommate from back in Kentucky asked for advice about what to say to his 7-year-old grandson. Last Monday morning, young Henry and his friend were dropped off at school by the friend’s dad, Mr. Barrick, who also was their little league basketball coach. A short time later, Josh Barrick, a senior vice president at Old National Bank in Louisville, was killed by bullets from an AR-15 assault rifle. My old roommate is at a loss for words. So am I.