Final answer:
If a restricted area is active and has not been released to the FAA, the ATC facility issues a Temporary Flight Restriction (TFR).
Step-by-step explanation:
If a restricted area is active and has not been released to the FAA, the ATC facility issues a Temporary Flight Restriction (TFR). A TFR is an airspace restriction that temporarily prohibits certain aircraft from operating within a specified area for reasons such as security, major sporting events, natural disasters, or other hazardous conditions.