Complex sentence: A.J. Smith (born Albert J. Smith February 28,1949) is a former professional American football executive, he was serving as the Executive Vice President and General Manager of the San Diego Chargers but was fired on December 31,2012.
Split into simpler sentences: A.J. Smith (born Albert J. Smith February 28,1949) is a former professional American football executive. He had been the Executive Vice President and General Manager of the San Diego Chargers but was fired on December 31,2012.