Assertion: ballistic missile's range | /r/CapableOf | serve as booster
Facets:
value: for space flights
type: PURPOSE
Source sentences:
text: The Air Force's goal in launching the Titan program was twofold: one, to serve as a backup should Atlas fail; and two, to develop a large, two-stage missile with a longer range and bigger payload that also could serve as a booster for space flights.