Usually, the room is isolated. There's one way in and one way out. Thinking three dimensionally, we also know that staff members historically have locked themselves in the most secure area. So staff might well be in the pharmacy room. If we have no contact with them, and the inmates aren't telling us anything, the pharmacy would be the logical place to look for any missing staff.
Most inmates think that the response teams have to go through the cell door to recover the hostages.
So they orient their defensive assets in that direction. In a tactical survey, we'll look at the windows as potential entry points. The Bottom Line Tactical surveys don't simply identify threats. That way, if a disturbance should ever end up under investigation or the subject of a suit, you can demonstrate you've adequately prepared and anticipated the end result. You've taken careful steps to use the minimum amount of force.