Pearl Jam‘s Eddie Vedder and Rage Against the Machine‘s Tom Morello know a special occasion when they see it, and the two rockers decided to take advantage of their friendships with Bruce Springsteen to perform at Chicago’s Wrigley Field Friday night (Sept. 7). For Morello, it was a homecoming of sorts as the guitarist grew up in the Chicago suburb of Evanston. The guitar great has turned up at numerous