Ok - but this is gonna be long.
Yes, there is one particular training that really "stuck" with me. It was in either 2014 or 2015. It was held on a teacher planning day - so no students in the school.
The school had hired a private consulting firm to conduct it. It was 3 or 4 (I think there were 4) guys and these guys were x-FBI and had been actively involved in the incident at Waco, Texas.
We were all brought together in the cafeteria. The guys were up on the stage - introducing themselves, giving a little history, etc. Once I heard they were x-FBI - my radar went up and I was paying attention to EVERYTHING. While they were talking - one guy left. He went out the side door of the cafeteria, down the hall and out of sight. I noticed that and kept looking that way. About 5 minutes or so later - guys were still talking - this guy came back around that corner - gun in hand and FIRED ABOUT 4 -5 shots in the air!!!!! (blanks of course). Well, chaos ensued. Most of people just screamed. Me? lol - I hit the floor and immediately started crawling to the outside door opposite of where the shots were coming from. While they were yelling for everyone to calm down and sit back down - one of the guys came over to me (I had almost gotten all the way to the door), he tapped me on the back and brought me up on stage. Now, I had already taken several self-defense classes on my own in previous years. He used me as an example and even had me defend myself against an attack. (I think they all knew that I knew what I was doing).
Next, they took us out in the hallway. They told us a shooter was going to come around the corner and we were to "flee". Well, the hallway they put us in was my hallway. In fact, it was right in front of my room. I backed up and had my back against my classroom door. There were 2 teachers in front of me and they were shook & talking to each other. I told them - stick with me - I'll get you out. So, the shooter comes around the corner - everyone is grabbing at each others hands - me? I reach around - unlock my classroom door - grabbed the 2 teachers - pulled them into my room. This particular room had an outside door!!!!!! And, of course, we went through my room and out the door. We were out - we were safe.
We kinda stood around and wondered what we should do next - since we were safe. I took them down a ways and went back into the school through another door - which was where the main group had collected. A lot of those teachers were "youngsters" fresh out of college and some were shook - some were laughing and joking.
The hallway we were in was a hallway to the gym. We - as a group - went into the gym. The "guys" had set up a type of obstacle course (because when you are being shot at - you always run in a ZIG ZAG pattern). They had each of us run the obstacles which stopped at the back of the stage (the stage connected the gym to the cafeteria).
I'll finish in next post - sorry its long but you asked