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Fourteen concertgoers were transported to hospitals during and after The Chainsmokers' Friday, September 4, 2026 show at Discovery Meadow in San Jose, California. The San Jose Fire Department responded at 8:22 p.m. to reports of multiple patients needing medical attention, with police suspecting alcohol and drug-related issues as the cause. The incident drew coverage from multiple outlets highlighting concerns about substance use at large outdoor electronic music events.