The shooting started when one of the fat-assed SWATers tripped on the way into the house and shot the door frame.
https://www.youtube.com/watch?v=oHYVdA6O6u4
None of the videos I’ve seen before have audio of the team announcing themselves like the one at the link above.
Compare to this one: https://www.youtube.com/watch?v=FnkKDJkM5HU