“Green Day’s headlining set at Outside Lands over the weekend was a milestone for the beloved East Bay pop punk trio. But the band’s first time performing at the San Francisco summer festival was also life changing for another boy from across the Bay Bridge. One of the most memorable moments from the three-day festival happened Saturday, Aug. 6, when frontman Billie Joe Armstrong plucked a 10-year-old named Montgomery out of the crowd to join him onstage to play a cover of “Knowledge,” the 1989 hit by fellow East Bay rockers Operation Ivy.” -From the San Francisco Chronicle. #outsidelands #greenday #sanfrancisco #eastbay #operationivy #sfchronicle #guitarplayer #greendayfans