TK=technical knowledge

It is UALs term for going to ground school. The training center is named DENTK. Denver Technical Knowledge. We just called it TK for short. Old term, still used. No Kingdom crap or anything. I never heard "kingdom" until I went through CALs school and an instructor made a comment about it.
I swear we have 12,000 drama queens here.
DENFO is Denver Flight Operations. And on and on.