Commercial alarm at power substation Heard on: San Bernardino County Fire - Valley 00:50 00:00 Medic Engine 23, commercial alarm. Transcript This transcript is auto-generated from live dispatch audio and may be incomplete or inaccurate. It is not an official report and may change. 00:00 Medic Engine 23, commercial alarm. 00:03 SCE Vista Substation 00:06 22200 Newport Avenue, 22200 Newport Avenue. 00:17 Call center, medic ambulance 619, confirming cancel. 00:29 Last unit with traffic for comm center. 00:38 Comm center, medic ambulance 619 confirming canceled off the crystal Avenue call. 00:49 That's affirmative, you can cancel. 2026-10-28 16:26 UTC Fire Newport Ave, Grand Terrace, CA 92313 View on map