Oh,don't you worry about me, my work is such that I'd probably be the FIRST person the terrorist sees/kills BUT the "system" insists all I need do is dial 911 and expressly forbids me or anyone else at the site from being armed NOR are there adequate remote controlled physical barriers. And most non-government sites are the same in this regard.
The same situation existed in 1986 when the standing orders at a power plant were not to permit entry by any armed person but no weapons were allowed to stop such intruders. Instead the guard(or a witness to his/her demise) was supposed to call inside corporate supervision who would then go to the site weapons locker and get what was needed !
My gripes are that too many people are put in untenable positions or simply set up as tripwires;because too many in authority are reluctant to spend more on selection, TRAINING, and yes,ARMING those most likely to have first contact.
Current policies result in incidents like the trucking company murders in Cincinnati, Ohio where the unarmed security and unlocked entry gates and doors didn't even slow the killer.
I would expect each industry/field to get warnings with some specific useful info.
A huge loss of U.S. military lives was avoided when the guard stopped the speeding car bomb with real bullets a week ago.Granted,STRONG,remote controlled gates and such would be safer in most people's hands.