Not what I expected, but it was an ICE supervisor who went postal, according to a blogger I know that works in the building. DU probably has pegged the shooter as a Tea Partier, of course.
"
The agent opened fire on the male supervisor repeatedly shortly before 6 p.m. in the building, according to the sources, who asked not to be named because they were not authorized to speak on the matter."
Oh what tangled webs we see whence we wait for what truth perceives.
Another shady government caper in the offing? Too soon to tell.
In any event someone has lost their daddy, husband, uncle grandfather, brother... God speed.