James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Steven …

James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto