Police said a 14-year-old boy was defending himself and his mother when he shot and killed an intruder Monday afternoon at their home on Ocean Drive. Capt. John Houston said the 14-year-old boy, whose name was not released, was home from school after becoming ill, and his 46-year-old mother, Rose Ann Kozlowski, had just returned from the grocery store when she was confronted by a man with a knife. ... After the robber caught the woman trying to untie herself once, she was able to free herself and her son and find her husband's pistol in a security box under...