The landing gear assembly of a CF-18 Hornet is blurred as technicians of the 441 Fighter Squadron perform an operational test in the squadron hangar. The multi-role CF-18 joined other Canadian and U.S. Air Force units at 4 Wing Cold Lake during the joint exercise, that will test the response of the air intercept and air defense capabilities of the American and Canadian Forces, supporting the mission of NORAD (North American Air Defense command). SCREEN RESOLUTION ONLY