The Virginia Beach shooter who killed 12 people and wounded several others in a municipal complex on Friday had submitted his resignation earlier that morning, officials said Sunday. The gunman, identified as 40-year-old DeWayne Craddock, was an engineer with the city's public utilities department for 15 years. In a news conference Sunday morning, Virginia Beach City Manager Dave Hansen described the man’s work performance as “satisfactory” with no ongoing issues of discipline.