In April 2011 the band announced that Vivian Campbell would be leaving Thin Lizzy amicably to rejoin Def Leppard after one final gig on 28 May. He was replaced by Guns N' Roses guitarist Richard Fortus. On 28 August, it was announced that Damon Johnson of Alice Cooper's band would be replacing Fortus for Thin Lizzy's tour of the US with Judas Priest. Fortus returned to tour with Guns N' Roses for the rest of the year, and Johnson has since replaced Fortus permanently.