...Sandy Hook demonstrates that to save lives there truly are only two simple principles – slow down an intruder bent on doing harm and speed up the response time of first responders.
Oh. You mean disarming the commoners won't save lives?
The theory is that if there were no guns in America, there would be no mass shootings. Which is of course true.
What they ignore is that there is no even vaguely politically acceptable plan to eliminate or significantly reduce access to guns in America.
So apparently their only response plan is one that they will admit in honest moments has no chance of success.