An out of service sign is posted on a pay gate at the Bay Area Rapid Transit (BART) Millbrae station on July 3, 2013 in Millbrae, California. For a third day, hundreds of thousands of San Francisco Bay Area commuters are scrambling to find ways to work as two of San Francisco Bay Area Rapid Transit&#39;s (BART) largest unions remain on strike while they continue contract negotiations with management. Train operators, mechanics, station agents and maintenance workers are seeking a five percent wage increase and are fighting management who want to have workers to begin contributing to their pensions, pay more for health insurance and reduce overtime expenses.