**FILE** An April 28, 2006 file photo of Australian Prime Minister John Howard lays a wreath at the memorial site of the Port Arthur massacre during a memorial service to mark the 10th anniversary of the massacre in Port Arthur, Tasmania. Two months into the first term of the new coalition government, gunman Martin Bryant murdered 35 people at Port Arthur, prompting John Howard to tackle guns. (AAP Image/POOL/Getty Images, Ian Waldie) Credit: IAN WALDIE/AAPIMAGE