Three Baby Boomers are still missing following Friday's collapse of a massive Jenga tower in this Atlanta suburb. '[Woodstock attendee] Iris [Kelcher] seemed to take the worst of it,' said Bruce Andrews, who was born 10 months after V-J Day. 'But I maintain hope that she's still alive somewhere in the outlying rubble.' Also unaccounted for in the Jenga collapse are Jefferson Airplane fan Kenneth Courson, 54, and former Timothy Leary follower Sylvia Voss, 53. 