File:MAN Tanker Refuels Challenger 2 MOD 45148897.jpg - Wikimedia Commons
Challenger 2 - Wikipedia
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File:Challenger 2-Megatron MOD 45161551.jpg - Wikimedia Commons
File:Challenger 2 main battle tank.jpg - Wikipedia
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Challenger 2 - Wikipedia
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File:Challenger 2 Tank MOD 45154622.jpg - Wikipedia