Findings:
- Challenger
- Where were you when the Space Shuttle Challenger exploded?
- Glomar Challenger
- Challenger Deep
- HMS Challenger
- Challengers of the Unknown
- The Challengers
- Challenger 2
- Video Challenger
- Challenger Expedition
- challenger (user)
- Dodge Challenger
- Chevrolet Camaro vs. Dodge Challenger vs. Ford Mustang
- Challenger Tank
- Challenger II
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