The thrash metal group Anthrax opened Openness for Kiss at the Thomas & Mack show in Las Vegas and at the Pacific Amphitheatre show Social_event in Costa Mesa .

In 2008 , the FBI requested Request a review of the scientific methods used in their investigation Criminal_investigation from the National Academy of Sciences , which released Publishing their findings in the 2011 report `` Review of the Scientific Approaches Used During the FBI 's Investigation Criminal_investigation of the 2001 Anthrax Letters . ''

Slayer and Megadeth had previously toured Traveling together in North America on American Carnage Tour in 2010 , with Testament and Anthrax as the supporting Supporting acts .

Metallica supported Supporting Ozzy Osbourne from March to August , headlined Statement a string of U.S. dates between May 23 and June 7 with Armored Hostile_encounter Saint , and were the main act throughout the fall and winter with support Supporting from Anthrax and Metal Church .