CNN  —  Aaron Brown, the renowned CNN anchor who gained prominence for his coverage of the September 11 attacks and his role in shaping the network’s evening news format, died Sunday at the age of 76, his family said. Brown’s career in journalism began in local television in Seattle before anchoring ABC’s overnight news program “World News Now.” He later joined CNN, where he became known for his incisive reporting. From 2001 to 2005, he anchored “NewsNight,” a program that combined breaking