Earth, Wind & Fire postpones its scheduled San Francisco concert at Chase Center minutes before showtime after a medical emergency involving a band member, multiple outlets report. According to accounts citing fire or emergency officials, a private ambulance responded to the incident on Thursday night. The reports describe the problem as a cardiac incident and say the individual is hospitalized and in critical condition. One outlet reports that the patient’s condition is described as critical, while another specifies the show is postponed immediately rather than proceeding as planned. The band does not present additional details in the provided reports, and the postponement is framed as a medical situation affecting a band member. The incident leads to the cancellation or postponement of the performance at the venue, as the band and event operations adjust on short notice. Coverage also notes public reactions after the cancellation, including well-wishes for the band member.