 Complete the following phrase:  In May, Megadeth finished recording its twelfth album, Endgame. The release date for Endgame was announced on the Megadeth official website, and Metal Hammer was the first to review the album track-by-track. Megadeth began its Endgame tour in October, and finished it in December. The tour featured a number of supporting acts, including Machine Head, Suicide Silence, and Warbringer. In January 2010, Megadeth was set to embark on the American Carnage tour with Slayer and Testament, but the tour was postponed due to Tom Arayas back surgery. Several weeks later, Megadeths Head Crusher was nominated for Best Metal Performance at the 