O'Connor announced on May 30, 2006 that the Canadian Forces would be restricting usage of the Mercedes G-Wagon to on-base operations only, after a number of Canadian soldiers were killed while travelling in the lightly armoured vehicle.
In a major cabinet shuffle on August 14, 2007, Prime Minister Harper moved O'Connor to the position of Minister of National Revenue, replacing him in the defence portfolio with former Foreign Minister Peter MacKay [REF].