The Buddy System of Co-Op *NSFW*
There's a commerical for Conflict: Denied Ops which appears to have aired only on the internet. It shows off some real world Co-Op tactics. How does it do that? Imagine yourself at a bachelor party. Now imagine the stripper comes out on stage but you and your buddy are stuck behind a crowd of people unable to see the show. What do you do? Squad tactics of course.