Final answer:
The CRC typically falls under the OPCON of the theater's Geographic Combatant Commander who oversees military operations within their area of responsibility.
Step-by-step explanation:
The CRC, or Combatant Command (COCOM), normally falls under the operational control (OPCON) of the theater's Geographic Combatant Commander (GCC). The GCC is responsible for all military operations within their geographic area of responsibility, which often includes theaters where a CRC may be an asset. The CRC might also coordinate with other theaters or national agencies depending on the specific mission and operational requirements at the time.