def METHOD_NAME(self) -> None:
    """Recreates the theater's threat zones based on the current planned state."""
    self.threat_zones = ThreatZones.for_threats(
        self.context.theater,
        self.context.coalition.opponent.doctrine,
        barcap_locations=self.enemy_barcaps,
        air_defenses=itertools.chain(self.enemy_air_defenses, self.enemy_ships),
    )