Final answer:
The Air Defense Perimeter is used to operationally test the AGM-88 HARM missile against surface-to-air missile sites.
Step-by-step explanation:
The test set used to operationally test the AGM-88 high-speed anti-radiation missile (HARM) is known as the Air Defense Perimeter. It has an estimated radius of 30 nautical miles and is used to evaluate the missile's effectiveness against confirmed and possible surface-to-air missile (SAM) sites.