TankFest 2015 - Filmed in 4K Ultra HD  - Leopard 1 &amp; Challenger 2 battle Tank http://t.co/jjka4KRWG3
TankFest 2015 - Filmed in 4K Ultra HD  - Leopard 1 &amp; Challenger 2 battle Tank http://t.co/jjka4KRWG3
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