Reports are coming in from various new sources after fans witnessed Joe Perry, performing with his side project The Hollywood Vampires stumble offstage during the bands set in Brooklyn Sunday night. Perry was said to have collapsed right behind the stage with what is reported to be an episode of cardiac arrest. Fans at the show posted pictures and video to social media of the incident. Perry is on tour with the American rock supergroup consisting of singer Alice Cooper, actor Johnny Depp on guitar, and drummer Matt Sorum, during his downtime from Aerosmith. We wish Joe a speedy recovery. We are tracking this story and will update further when more news is confirmed.