Final answer:
The question is about the coordination and transition of aircraft between different sectors in the airspace.
Step-by-step explanation:
In the given question, the subject is Air Traffic Control. The question is discussing the coordination and transition of aircraft between different sectors in the airspace.
Aircraft transitioning to the KEYSTONE sector, which have been pointed-out to the GREEN COVE sector, require further coordination with the GREEN COVE sector if they re-enter GREEN COVE airspace north of ORL when climbing to the requested altitude. This coordination is necessary to ensure the safe movement of aircraft and to avoid any conflicts.
ZMA, which is responsible for the airspace, may initiate a change in coordination procedures if needed.