Mourners gather around the altar during a memorial service for John Johnson at Our Lady of Lourdes Church in Oakland, Calif. on Tuesday, Dec. 18, 2007. Johnson, a 47-year-old homeless man who was a fixture in the Grand Lake neighborhood, died Sunday, Dec. 9, from an apparent heart attack. About two dozen residents and merchants attended the service which was organized by longtime area neighbor Nancy Rieser. PAUL CHINN/The Chronicle **John Johnson, Nancy Rieser MANDATORY CREDIT FOR PHOTOGRAPHER AND S.F. CHRONICLE/NO SALES - MAGS OUT