Two cops in a car were guarding one of the airlocks into the Hot Zone, where Greta’s Strike Committee was sullenly awaiting eviction. Without warning, the youngest of the five girls clapped her hands to the sides of her head, and emitted an ear-shattering scream. The police, galvanized with surprise, left their car at once and rushed over to give the girl aid. They fell into an invisible rat’s nest of tripwires, which lashed their booted legs together with a stink of plastic. The moment they hit the ground, two other girls coolly shot them with sprayguns, pasting them firmly to the earth.