Good Evening everyone. I have a few questions, they're more in detail about how to approach an active shooter than what should be answered on an open forum. If any LEO's out there don't mind sharing some knowledge with me I would greatly appreciate it. You can message me on here, or talk through email whatever is easier for you. A few of my questions are; What types of formations would be most beneficial if you do have back up with you, I'm mostly referring to 2-4 man formations. Does anyone have knowledge of a real life active shooter that used "sleeper" shooters that were inactive until LEO's arrived? What is the best way to enter a building as a single man patrol?