How does a 400-airsoft player mannequin challenge looks like? Here is a footage taken by the Swamp Sniper at Ballahack Airsoft. Look closely and find out who moved and scratch his butt or picked his nose... "Swamp Sniper at Ballahack doing a 400 player mannequin challenge with @airsoftology and Classic Army."
Here is the briefing video as posted on Facebook: