I have numerous times, plus teaching building search and active shooter techniques to police recruits for at least 100 classes.
Kind of funny, the first NTOA Active Shooter Instructor course I attended was conducted in Phoenix. Lots of SWAT guys. They lined us up in twos to check room entry techniques. Myself and Mark (my co-worker) were towards the end of the line and we are watching all cross- hook, or hook-cross entries ahead of us just kind of looking at each like WTF? We get up there, he pies the door, we criss-cross, with me going first into the uncontrolled area - kind of like what we'd been teaching recruits for several years Every one after us, saw the light and did the same.
So, any comment that I've made in this thread is based on more that one or two runs. You want a vitae?