Who: BLU Soldier and any mercenaries who are interested in costume-related morale building activities.
Where: Common room
When: November 2nd
What: Americans do it themselves.

Soldier wasn't entirely sure of the date anymore, but he knew it must somewhere in the general area of Halloween. And that was a good enough reason to dig through the trash, the museum's exhibits, and the Historical Storage Shed to find things with which to cobble together a costume.

He decided he was a robot when he was done. Which was rather fitting, all things considered.

Then he went to the common room to harass whoever was in there.

"BEEP BOOP, MAGGOTS!"