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 which supersonic variable-sweep wing, heavy bomber used by the United States Air Force (USAF)?
Sentence (from "Rockwell B-1 Lancer"): The Rockwell B-1 Lancer is a supersonic variable-sweep wing, heavy bomber used by the United States Air Force (USAF).
Relevant evidence: Yes