The operation begins in the subway tunnel, at Jungfernheide station, in the west of Berlin. Around 30 soldiers storm down the staircase, onto the platform, then jump onto the tracks. A machine-gunner sets up his weapon on the platform and puts his sights on the stationary subway train. The platoon leader signals his soldiers to approach the train. There are screams from the rear compartment, and suddenly the tunnel is filled with smoke. The sound of automatic gunfire rings out from inside the train.
Berlin-based soldiers from the German Army were conducting drills in the tunnels, practicing how to fight saboteurs and other urban warfare contingencies. These included training for urban and house-to-house fighting, as well as the protection of critical infrastructure.
