The call came in at 06:14 on April 17th as a report of multiple casualties at the abandoned Industrial Park 9 on the southern perimeter. The caller, a security contractor named Yusuf Lindqvist-Osei, reported that workers had been found "dancing" in the main assembly hall of Building C. He requested ambulances. We dispatched four units.

What we found was 34 people dancing. Not in the colloquial sense — not celebrating, not moving rhythmically to music. Dancing in the clinical sense described in historical accounts of choreomania. Involuntary, sustained, rhythmic physical movement that the participants could not stop. They were moving in patterns — circles, lines, paired figures — across the concrete floor of an abandoned assembly hall with no music, no sound system, no external stimulus of any kind. They were dancing in silence.

All 34 subjects had entered the building within the preceding 12 hours. They were scavengers, squatters, and salvage workers — the usual population of abandoned industrial sites. They had no connection to each other. They were not part of a group. They had entered individually or in pairs and at some point had begun to dance. None could stop. We attempted physical restraint. Restrained subjects continued involuntary movement even when held — muscles firing in the same rhythmic patterns against the restraints. Sedation was partially effective. Heavy sedation reduced the movement to tremors. Light sedation had no effect.

Seven of the 34 were dead when we arrived. Cause of death: cardiac arrest secondary to exhaustion. Their feet were bloody. The concrete had abraded through their shoes and then through their skin. Based on foot abrasion and blood loss estimates, the longest-duration dancers had been moving for approximately 18 to 22 hours without pause. The survivors were transported to Meridian General. Fourteen have recovered. Thirteen remain in care with persistent involuntary movement disorders. None can explain why they started dancing. None remember choosing to. Several remember trying to stop and being unable to. One survivor, Ines Nakamura-Diallo, said only: "The floor wanted it." No BCI involvement was detected. No neural interference. No toxicology findings. Pure biological compulsion from no identifiable source.