Released in May 2007, "United Abominations" debuted at number eight on the "Billboard" 200, selling 54,000 copies in the first week. In March, Megadeth began a North American tour opening for the newly reformed Heaven & Hell. The band played with Down for Canadian shows and with Machine Head for the US dates. A European summer festival tour followed. Late in the year, Megadeth returned to the United States to headline its Tour of Duty. In November, the band brought Gigantour to Australia with a lineup including Static-X, DevilDriver and Lacuna Coil.