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?
Sentence (from "Lockheed F-117 Nighthawk"): The F-117 was based on the "Have Blue" technology demonstrator.
Relevant evidence: No