US and Canadian officers announced the results of Operation Frozen Timber at a press conference in Bellingham, Washington, on 29 June 2006.[1][2] The investigation, which began in November 2004, targeted six smuggling rings that flew marijuana south across the border in helicopters and small planes while flying cocaine north.[1][2]

Investigators seized 8,000 pounds (about 3.63 tonnes) of marijuana, 800 pounds of cocaine and more than 1.5 million US dollars in currency.[1][2] Federal prosecutors in Seattle and Spokane issued 45 indictments, and more than 40 people were arrested in the United States, with further arrests in Canada.[1][2] The crews flew low through the Okanogan National Forest and North Cascades National Park to evade radar, landing in clearings where loads were transferred to pickup trucks in as little as 43 seconds.[1] One alleged ringleader, Robert Kesling, received 17 years in federal prison.[2] In Canada, police arrested Daryl Desjardins and Dustin Haugen in Chilliwack and made four further arrests.[2]