SAN BERNARDINO COUNTY SHERIFF'S DEPARTMENT

DISPATCH RADIO TRANSMISSION LOG

Transmission Date: July 12-13, 2010 | Digital Archive:
⚠️ OFFICIAL POLICE RADIO COMMUNICATIONS ⚠️
CONTAINS SENSITIVE TACTICAL INFORMATION
LAW ENFORCEMENT PERSONNEL ONLY

CRITICAL INCIDENT RADIO TRAFFIC - SHERIDAN CASE

Primary Frequency: 154.755 MHz (SBCSD Channel 1)

Backup Frequency: 453.650 MHz (Tactical Channel)

Recording Period: July 12, 2010 23:00 - July 13, 2010 06:00

Incident Classification: Priority 1 - Major Crimes Response

23:47:15
[Audio Quality: Clear - Digital Recording]

DISPATCH: Unit 4-Adam-7, respond to 1247 Forest View Drive, Highland. Report of suspicious activity. Neighbor reports lights in basement of supposedly vacant residence.

4-ADAM-7: Copy. En route to Forest View Drive. ETA 8 minutes.

DISPATCH: 4-Adam-7, be advised - property owner reported out of state. House should be unoccupied per property management company.

4-ADAM-7: 10-4. Will investigate and advise.

23:58:42
[Background noise - Vehicle engine, radio static]

4-ADAM-7: Dispatch, I'm on scene at Forest View Drive. [Static interference] Definitely lights visible in lower level. Vehicle in driveway - appears to be older model sedan, license obscured.

DISPATCH: Copy 4-Adam-7. Do you need backup units?

4-ADAM-7: Negative at this time. Making approach to... [Extended static] ...wait, dispatch...

DISPATCH: 4-Adam-7, please repeat. You're breaking up.

00:01:33
[Audio Quality: Poor - Heavy static interference]

4-ADAM-7: DISPATCH! I need immediate backup at Forest View Drive! I can see... [Heavy static] ...basement window... somebody's down there with a camera... [Static] ...this looks really bad!

DISPATCH: 4-Adam-7, confirm request for backup. Units 4-Adam-12 and 4-Adam-3 responding. ETA 4 minutes.

4-ADAM-7: I'm hearing... sounds like someone screaming... [Interference] ...moving to rear of residence... basement access...

00:03:47
TACTICAL CHANNEL - ENCRYPTED COMMUNICATION
[Switched to Tactical Channel 453.650 MHz]

TACTICAL DISPATCH: All units responding Forest View Drive - switch to tactical channel. Major Crimes en route. Prepare for possible hostage situation.

4-ADAM-12: Tactical, 4-Adam-12 on scene. 4-Adam-7's vehicle present but no visual on officer.

TACTICAL DISPATCH: Copy. Establish perimeter. No approach to residence until Major Crimes arrives with tactical team.

00:07:22
[Multiple officers transmitting - some overlap]

4-ADAM-7: Tactical, 4-Adam-7. I'm in the basement. You need to get CSU here immediately. This is... this is a crime scene. Multiple victims.

TACTICAL DISPATCH: 4-Adam-7, confirm your safety. Are there active threats present?

4-ADAM-7: Negative on threats. But... dispatch, we have a problem. This looks like ritual activity. And there's photography equipment... lots of it. Someone documented everything.

MAJOR-1: Major Crimes on scene. 4-Adam-7, do not disturb anything. We're sending in crime scene team.

00:15:58
[Clearer audio - officers using handheld radios]

CSU-1: Crime Scene Unit to Tactical. Initial assessment confirms major crime scene. Request immediate media blackout and expanded perimeter.

TACTICAL DISPATCH: Copy CSU-1. PIO notified. Perimeter expanding to 2-block radius. No media contact authorized.

MAJOR-1: Tactical, Major Crimes. This scene shows similarities to cold case files from the 90s. Requesting Detective Kirby be contacted immediately.

TACTICAL DISPATCH: Detective Kirby has been notified and is en route. ETA 45 minutes.

EXTENDED INCIDENT RADIO TRAFFIC:

01:32:16
[Multiple units coordinating - background activity noise]

KIRBY-1: Detective Kirby on scene. CSU, what's our status?

CSU-1: Detective, basement contains extensive evidence of ritual activity. Photography station set up for documentation. Multiple Polaroid cameras. This matches your old case files exactly.

KIRBY-1: Understood. I need to see the candle arrangement and any symbol markings. Also, check for IBM Selectric typewriter - that's crucial to the historical connection.

[Following transmission partially encrypted]

KIRBY-1: Tactical, this is connected to the 1993-1995 series. Same perpetrator. We need federal resources and witness protection protocols activated immediately.

02:15:33
[Background sounds of investigation activity]

CSU-2: Crime Scene to all units. Found extensive photo documentation of victims and ritual preparations. Perpetrator maintained detailed records.

MAJOR-1: Any sign of the family members?

CSU-1: Negative. Evidence suggests they were removed from scene. Search teams being organized for forest areas.

TACTICAL DISPATCH: SAR teams mobilizing. K-9 units en route. Helicopter support requested for dawn operations.

TACTICAL COORDINATION SUMMARY:

RESOURCE DEPLOYMENT - JULY 13, 2010:

05:42:17
[Dawn operations - multiple agencies coordinating]

SAR-1: Search Team 1 to Command. Found disturbed earth approximately 2 miles northeast of residence. Requesting cadaver dogs and excavation team.

COMMAND: Copy SAR-1. Coroner's office notified. Federal forensic team en route.

KIRBY-1: Command, Detective Kirby. This location matches the geographic pattern from the historical cases. Grid search should focus on elevated areas with natural water access.

TECHNICAL ANALYSIS - RADIO COMMUNICATIONS:

COMMUNICATION PROTOCOL REVIEW:

Response Time Analysis:

Radio Interference Analysis: Significant static interference noted during critical early transmissions (23:58-00:03). Later determined to be caused by electronic countermeasures equipment found at scene - perpetrator attempted to jam police communications.

CHAIN OF CUSTODY - RADIO RECORDINGS:

2010-07-12 23:47 - Automatic digital recording initiated (standard protocol)

2010-07-13 00:15 - Tactical channel recordings classified

2010-07-13 06:30 - Full incident recordings secured as evidence

2010-07-15 09:00 - Audio analysis completed by FBI technical services

2010-07-16 14:30 - Transcriptions completed for case file

2010-07-18 11:00 - Classified portions reviewed by federal prosecutors

⚠️ These transmissions contain active police tactical information ⚠️

Officer safety protocols and tactical procedures must be protected

Communications Supervisor: ██████ | Lead Detective: J. Kirby