DECATUR, Ga. (AP) - When 74-year-old J.C. Adams saw three would-be robbers walk into his convenience store, he grabbed his shotgun with one hand and balanced himself on his walker with the other. On a surveillance monitor, he saw two men and a woman hold up an employee at the cash register Thursday night. That's when Adams pushed his walker to the front of the store and confronted the armed suspects, killing one man and wounding the other. An employee held the woman until police arrived. "No need to let something like that live," said Adams, who had been wounded...