{
  "operation": "OP-10 Delta Nine",
  "theatre": "Dense urban grid",
  "difficulty": "Ace",
  "duration_min": 18,
  "time_of_day": "smoggy noon",
  "weather": "urban haze",
  "objectives": [
    "Kill rooftop SAM nests without collateral",
    "Protect the medevac corridor",
    "Hit the command bunker on signal",
    "Withdraw across the river"
  ],
  "threats": ["Rooftop SAM x5", "Technical teams x8", "Hostile scout pair"],
  "medal_thresholds": {"bronze": "bunker destroyed", "silver": "under 18:30", "gold": "under 16:00, zero collateral", "ace": "under 14:00, medevac untouched"},
  "rewards": {"credits": 2600, "unlock": "OP-11 Glass Meridian"}
}