The Metal Allegiance all-star jam will be coming to California. The event will take place on January 21, 2015 at the House of Blues in Anaheim and will include appearances from Frank Bello (Anthrax), Charlie Benante (Anthrax), Chuck Billy (Testament), Chris Broderick (Megadeth), David Ellefson (Megadeth), Scott Ian (Anthrax), Andreas Kisser (Sepultura), Mark Osegueda (Death…