Final answer:
When a JTAC receives an abort code, they must cease operations immediately, confirming the code with the ground team before relaying it to aircraft involved.
Step-by-step explanation:
If a Joint Terminal Attack Controller (JTAC) receives an abort code, they must immediately cease operations. The abort code is a prearranged signal used to terminate the mission quickly and safely. This protocol is crucial for minimizing danger to friendly forces and collateral damage during close air support or other coordinated military actions. Upon receiving the abort code, the JTAC would typically confirm the code with the ground team to ensure there is no miscommunication before relaying the instructions to any aircraft involved in the operation.