Virginia Beach Shooter Isolated Self at Work, Making it Hard to Predict Attack: FBI On 6/9/21 at 12:07 PM EDT The FBI said this week that DeWayne Craddock, who shot and killed 12 people in Virginia Beach in 2019, intentionally isolated himself at work, which would have made it hard for colleagues to "see the confluence of behaviors that may have forewarned the attack." Findings released Wednesday from an FBI Behavioral Analysis Unit investigation determined that Craddock's murder spree was "was motivated by perceived workplace grievances" that he had "fixated on for years." The FBI said that the city engineer had a skewed understanding of his work performance and how work colleagues regarded him, the Associated Press reported.