The killers have come so often and taken so many, the mindset of many Americans has become not "if" it will happen again, but "when."
Schools in the Houston area and across the U.S. backed by safety-obsessed public officials have endeavored to be ready.
A recent planning video produced by the Texas Attorney General offers recognition of the ongoing risk and the effort to meet it.
"The very lives of our children depend on our vigilance and preparedness," says Abbott at the close of the video titled "Saving Lives-When Seconds Count." And yet, the effort nationwide has fallen short. The killings in Newtown represents the latest dreadful proof.
Former FBI agent Don Clark offers a disturbing reality check.
"When a person such as this individual today is hell bent on something that's so bad and so sinister, its very difficult, its very difficult to stop," said Clark.
"There's almost no entity in the United States that's not vulnerable at some point depending on the mindset and the equipment of the individual or individuals when they are going on a rampage," added Clark.
A grandfather, Clark believes Columbine in 1999 and now Newtown should catapult student security to the very top of America's priority list.
Clark said he sees a need for more manpower, more planning and more technology to keep school kids safe. He insists that lives can be preserved when maniacs decide to murder.
"We can spend money on a lot of other things, but we need to spend tax money on making sure those kids are as secure as they possibly can be. That's where we send our babies."