This has been getting a lot of discussion lately about EMTs carrying on the job. Personally, I think if you have gone through the process of getting a concealed carry permit, you should be allowed to carry everywhere, including at work. I do not have a CCP but am considering applying. To be honest, I don't know if I would carry at work, but I think the freedom to do so should be there for others.
I had a call once for a infant cardiac arrest. It was tragic, the family was extremely upset, and as I was doing compressions. I wasn't even MedicMarch yet: I was just joe-blow March, doing a ridetime. As I looked up from where I was compressing, I saw an AK47 style rifle in the closet. This, combined with the uncle's threats that we needed to save the child, "or else", led me to point this out in a whisper to my preceptor. He calmly asked for Sheriff's department to come out (they were already on the way) and the officers arrived and politely escorted the distraught gentleman outside. Nothing bad happened.
But if the man would have gone for the rifle, I personally would have preferred to have gone down shooting than with a scared look on my face.