This past week marked the 27th anniversary of the Oklahoma City bombing. As the worst terrorist act committed on U.S. soil at the time, we all know the reported facts of the horrific event well: a 27-year-old Desert Storm-vet, Timothy McVeigh, acting with minimal help from Terry Nichols and Michael Fortier, detonated a 7,000-pound fertilizer bomb from a parked Ryder truck outside the federal Alfred P. Murrah building, killing 168 people, 19 of them children. Two years later, in 1997, McVeigh was convicted of "Using a weapon of mass destruction resulting in death," among other federal...