Littleton. Sandy Hook. Virginia Tech. Aurora.
All these are places where a lone gunman came out of nowhere and started shooting, taking dozens of lives.
Although school shootings are the most notorious examples of mass killings, they can happen anywhere, said Lt. R. Curtis Hardison of the Virginia State Police.
Hardison and Isle of Wight County Sheriff Mark A. Marshall spoke Monday night at Windsor High School on how to deal with an “active shooter.”