KANDAHAR AIRFIELD, AFGHANISTAN: JULY 18, 2011 -- One of the Canadian Forces�  fleet of three reconnaissance UAVs named the CU-170 Heron sits in a hangar at Kandahar Airfield, Afghanistan July 18, 2011.     (William Marsden / Postmedia News)       For William Marsden (Postmedia News) AFGHAN-DRONES
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