{
  "operation": "OP-03 Serpent Shelf",
  "theatre": "Redstone canyon system",
  "difficulty": "Regular",
  "duration_min": 10,
  "time_of_day": "late afternoon",
  "weather": "gusty crosswind",
  "objectives": [
    "Follow the canyon shelf below radar line",
    "Neutralise 3 ambush positions",
    "Recover the downed drone",
    "Extract through the north mouth"
  ],
  "threats": ["Ambush teams x3", "Technical trucks x4"],
  "medal_thresholds": {"bronze": "drone recovered", "silver": "under 11:00", "gold": "under 9:30, hull above 70%", "ace": "under 8:20, canyon never exited"},
  "rewards": {"credits": 900, "unlock": "OP-04 Iron Coast"}
}