A Virginia man previously convicted of terrorism charges opened fire in an Old Dominion University classroom on Thursday morning, killing one person and wounding two others, plunging our region into mourning. Were it not for the swift, courageous action of students who ended his life, this tragedy could have been much worse. Details are coming to light, though questions remain, and federal authorities should be forthcoming with what they learn in the coming days. For now, our focus should be on comforting the family and friends of the victims, the care and wellbeing of the ODU community, and the need for greater precautions throughout a military region at a time when international conflict makes Hampton Roads an attractive target for violent extremists. Investigators say that an ROTC class at Constant Hall in Norfolk was interrupted by a gunman who first confirmed that students there were part of the military training program and then began shooting. Lt. Col. Brandon Shah, the head of the ODU ROTC program and a professor of military science, was fatally wounded, and two students were in