The gunman involved in this shooting that took 12 innocent lives planned on quitting and then quit just before returning to open fire in the municipal building before being gunned down himself.

DeWayne Craddock, had sent an email on Friday that declared his intention to quit.

Eleven city workers were killed in the rampage, which was among the deadliest episodes of workplace violence in the United States in recent years. The employees, who had collectively worked for the Virginia Beach government for more than 150 years, were LaQuita Brown; Ryan Keith Cox; Tara Welch Gallagher; Mary Louise Gayle; Alexander Mikhail Gusev; Joshua O. Hardy; Michelle Langer, known as Missy; Richard H. Nettleton; Katherine A. Nixon; Christopher Kelly Rapp; and Robert Williams.

Herbert Snelling, a contractor who was at the municipal center to see about a permit, was also killed.

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