There is not a single instance where any private business, or honestly, government (remember NASA MSC?) property where a policy banning firearms has prevented anyone from bringing in a firearm and killing people.
I don't buy the argument where insurance companies are a reason firearms are banned. If it was, your homeowner or renter insurance would stipulate the same thing, and I certainly would not be insurable given the number of firearms I have and the associated ammo.
IMHO, if private busines was forced by law to ensure their employees safety TO and FROM work if they banned legal carry, then the HR types would be rewriting policy like there was no tomorrow. Companies do respond to libility. How many individuals who have been traumatized by workplace murders have sued for lack of security?
An example of how easy it is to bring a firearm into a prohibited place:
I am a navy vet, submarine service. Christmas 1976 I was packing to leave on patrol aboard the fleet ballistic missile boat I was stationed on that was moored at the naval weapons station, Charleston, SC. The place was as secure as any place could be with thousands of nuclear weapons stored there. Signs were posted that deadly force was authorized without warning. If your car broke down you stayed in it.
My son watched my wife help me pack my seabag. Santa had brought him a nifty two-gun cowboy rig with shiny cap pistols. He wanted to give me a going away present so he put a pistol in the bottom of my seabag. My wife drove me to the pier through the weapons station. At the pier my bag was searched by the tender security. I boarded the boat and when I turned my seabag upside down to dump my stuff for stowing in my bunky locker, out tumbled the pistol.
My shipmates were quite curious as to why I had brought a six-shooter onto the boat. Needless to say I did have a little fun with it when the off-planesman tried to wake me up to go on watch. The chief-of-the-boat and I had a discussion as he held me off the deck by my chest hair. He was a big ol' boy.
I know this may sound silly to most, but it was indeed a big deal. I had to get the durned thing off the boat and back home after patrol.
Policy and rules prevent nothing. Policy and rules are the HR equivalent of gun ban legislation.
Employers should be forced to allow us to exercise our right of self defense, at least let us have them in our vehicles. Even the government. The second amendment applies to them, especially. I will never understand how the feds get away with what they do, even in national parks.
Anygun
"When democracy turns to tyranny, the armed citizen still gets to vote." Mike Vanderboegh
"The Smallest Minority on earth is the individual. Those who deny individual rights cannot claim to be defenders of minorities." – Ayn Rand