Complex sentence: On 18 December 2007 the Department of National Defence rescinded this work suspension and will continue with modernization, which includes upgrading computer, navigation, communication and radar systems as well as making structural improvements to ten of eighteen aircraft.
Split into simpler sentences: On 18 December 2007 the Department of National Defence rescinded this work suspension so that the project could continue. Work includes upgrading computer, navigation, communication and radar systems as well as making structural improvements to ten of eighteen aircraft.