According to http://www.forces.ca/ -The Royal Canadian Air Force supports a wide variety of domestic and international operations. It also provides support to the Navy and Army by providing an operationally-ready, multi-purpose, and combat capable force. Its roles include: Protecting Canada's sovereignty through air surveillance or surveillance of Canada's airspace. Assisting other government departments in times of emergency or disaster contributing to the collective defence of North America through NORAD Supporting Canadian interests abroad, including support for United Nations, NATO, and coalition operations, peacekeeping and humanitarian aid The Air Force is ready to respond to conflict and emergencies by providing air lift of equipment, troops, cargo. Canada’s Air Force engages in operations and exercises in Canada, North America, Africa and Afghanistan.

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