Way back in the day I wrote this. Just remembered and thought I'd share, for auld lang syne.
It's a guide on how to play SWAT 4 Co-Op in a very specific, police-sim kind of way. It goes into great depth in regards to tactics, cover sector, room clearing procedures, including flowcharts and all that jazz.
I don't know if it's of any use for anyone, but I know I put in more effort than in any way justifiable, so here goes:
https://docs.google.com/document/d/1...it?usp=sharing