The briefing
The far wall is built from dozens of hexagonal light panels and the floor is stocked with soft balls. Each round lights a handful of cells: hit one and it goes dark and scores, miss it and the pattern moves on without you. Lit cells appear anywhere on the wall, high corners included, so a squad splits the wall between them and calls targets out loud instead of everyone throwing at the same hexagon. The balls come straight back to the floor in front of you, so a round is throw, retrieve, throw again until the timer stops.