In Alaska, in September 2008, the US Coast Guard had just started operations in the Arctic and we joined a C-130 patrol flight to Barrow.

BBC: The 'big melt' at the roof of the world

The review concluded the Customs and Border Patrol had "shortfalls of qualified staff and equipment, " which, together with flight limitations imposed by the Federal Aviation Administration, limited actual flight time.

WSJ: Border-Security Drone Program Off to Rough Start