Question: ACES II is an ejection seat system manufactured by the United Technologies Aerospace Systems (UTAS) division of the United Technologies Corporation (UTC), it is used in the Lockheed F-117 Nighthawk, a single-seat, twin-engine stealth attack aircraft that was developed by Lockheed's secretive Skunk Works division and operated by which organization?
{'answer': 'United States Air Force (USAF)', 'supporting_facts': [['ACES II', 0], ['Lockheed F-117 Nighthawk', 0]]}