{
  "schemaVersion": 1,
  "exerciseId": "EX-MERIDIAN-CYBER-001",
  "notice": "FICTIONAL SYNTHETIC EXERCISE DATA — NOT A PUBLIC WARNING",
  "samples": [
    {
      "id": "SIM-EAS-TRUSTED-01",
      "receivedAtUtc": "2035-04-17T14:01:12Z",
      "origin": "SIM-COUNTY-AUTHORITY",
      "channel": "exercise-feed-a",
      "messageType": "weather-shelter-exercise",
      "area": "Port Meridian exercise zone",
      "text": "EXERCISE: move tabletop participants to the designated shelter review step.",
      "signatureState": "valid-simulation",
      "sourceTrust": 0.93,
      "synthetic": true
    },
    {
      "id": "SIM-EAS-CONFLICT-02",
      "receivedAtUtc": "2035-04-17T14:01:19Z",
      "origin": "SIM-UNKNOWN-RELAY",
      "channel": "exercise-feed-b",
      "messageType": "conflicting-instruction-exercise",
      "area": "Port Meridian exercise zone",
      "text": "EXERCISE CONFLICT: contradictory routing instruction for analyst comparison only.",
      "signatureState": "unverified-simulation",
      "sourceTrust": 0.22,
      "synthetic": true
    }
  ],
  "requiredAnalystAction": "Compare provenance, quarantine the unverified sample, document uncertainty, and preserve the human approval lockpoint."
}