Dear Colleague that apparently took something wrong and your actions blew things out of proportion:

Are you a lilly-livered weenie? Said colleague of mine that was escorted out of the building didn't deserve it. So he had a knife, um, you'd be surprised how many of us do. Yesterday I wished I had a machete - and why yes, the office bought it. I have a few blades at my desk, maybe you don't want to see the innocent looking trowels that the archeologists have. We call them tools, not weapons. We use them as tools. Not everyone in the building uses computers, calcuators, and survey rods. Some of us use other equipment.

Dear Colleague that was escorted out:
Lord God Above I hope this "situation" gets sorted out, and you'll be back. Need you to help me out with my fish stuff on my projects. But dude, you do need to keep your emotions in check. Be honest, see a doc, you don't need this emotional roller coaster. Hope to see you back to work soon. *sigh*