As is always the case
No one died after the "good guys" with guns arrived
Truly a case for letting good citizens carry in the workplace, the wolves have no problem killing defenseless sheep, but it seems they take the cowards way out when the sheepdogs arrive.
Weather it takes, as in this case 3 minutes, or 4 minutes at Ft Hood, or 10 minutes like Virginia Tech, it's just a killing field, until the "Good Guys" with guns arrive.
Of course the powers that be, will continue to put up signs, and statements in employee manuals, to relive themselves of liability, and good people will continue to die.
Signs do not stop armed bad guys, but good guys with guns do.