Within one of the Insurrectionists key hidden bases is a gathering of individuals, including several notable ones

Insurrectionist Leader: Going over plans with CT

Girlie: Sitting in the corner impatiently

Demo man: Reloading his shotgun

Sharkface: Finishing the shark decal on his weapons

Resistance Sniper: Disassembling and reassembling his sniper rifle

Chain Guy and Chain Girl: Giggling maniacally

Sleeveless Soldier: Doing weightlifting with some cinder blocks