Metallica, Slayer, Megadeth, and Anthrax ??? the "Big Four" of 1980s thrash metal ??? will play together for the first time in history tonight (Wednesday, June 16) at the Sonisphere festival at Bemowo Airport in Warsaw, Poland. The first photo of all the members of the four bands (minus Slayer guitarist Jeff Hanneman) hanging out in a room together, taken yesterday (Tuesday, June 15), can be viewed