A C-17 transport plane flying from Afghanistan to Kyrgyzstan prepares for mid-air refueling from a KC-135 Stratotanker, Dec 18, 2011. The C-17 has a flexible payload capacity to complete long-range strategic deliveries, tactical transport, and paratrooper drop missions. The C-17 has a max load close to 78 tons, and a max range of 11,600 kilometers after refueling mid-air. [Photo/Agencies]
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