We spent a fair amount of time training for building searches at the Academy. However, they put us in groups of four to six. We were discouraged from doing two-man clearing. Most of the time, that's all we have available.
ALso, each group was taught by a diferent person. I don't think any two groups did it the same. The Academy had two SWAT/SRT teams come in to instruct and every group was taught by an individual from one of those teams.
Kind of funny, when the PD has to clear a school or large building, they ask for our assistanee and the assistance of the UPD. When we have a large building, we have the two or three of us take care of the whole thing.
My Dept. has done it a few times, but for somee reason, we always have a larger clearing element than midnight shift ever has people working (working, not necessarily available).
I was also told by one of the instructors last time that he would never clear a building without a long gun. Well, Scooter, my long guns don't have lights and I'm not allowed to add one, so a pistol (with a light) and a flashlight, it is. Tried that long gun/flashlight/crawling over stuff/can't open the doors game before. I guess I could sling a long gun, just in case, but I never have (might start, though).
I guess they don't train for a two-man clearing element with no perimeter becuase it would reinforce just how screwed we are if someone inside really wants to do us harm.