Jack Peterson – Investigator
Police Sergeant (Retired)
Jack specializes in complex investigations, which include internal affairs, sexual harassment and work place harassment, as well as background investigations. Jack brings a great deal of investigative experience to The Blackrock Group: he was an Oakland Police Sergeant and Police Officer for sixteen years. Jack’s assignments included patrol, street narcotics enforcement, special victims unit, school resource commander, and internal affairs division where he conducted high profile misconduct investigations. Jack has extensive experience having worked hundreds of internal affairs, criminal, and background investigations. He was also a lead academy and in-service training instructor. 

Don Schneider – Investigator
Police Corporal (Retired)
Don is retired from Fairfield Police Department where he spent the last several years of his twenty-year career in the Personnel and Training Unit. In this position his duties included serving as a Field Training Officer, coordinating the Department’s in-service training program, and managing and conducting background investigations. 

Jim Nelson – Investigator
Police Officer (Retired)

Jim worked as a Police Officer with both Suisun City Police Department and Vacaville Police Department for over fifteen years. He conducted background investigations at both agencies before retiring and coming to Blackrock. Jim has many years experience in investigations and conducting interviews. 

Bob Denton – Investigator
Police Lieutenant (Retired)
Bob retired from the Vacaville Police Department after nearly thirty years on the job. He held numerous assignments including Detective and Internal Affairs where he conducted investigations regarding alleged misconduct, harassment, and some background investigations. Bob comes to Blackrock with many years of investigative and command experience. 

Marty McCann – Investigator
Police Detective (Retired)

Marty has twenty-five years of experience in many aspects of police work. He retired from Antioch Police Department where he spent several years as a Detective investigating crimes up to and including homicides. Marty has a wide breadth of investigative experience that serves him well as a background investigator. 

Sam Miller – Investigator
Police Sergeant (Retired)
Sam joined Blackrock after fifteen years with the Oakland Police Department where he worked Patrol, Investigations, Internal Affairs, and conducted background investigations. He brings a wide breadth of experience to our investigative team. 

Mel Ferro – Investigator
Police Corporal (Retired)
Mel retired from the Fairfield Police Department after thirty years on the job. At Fairfield he worked mainly Patrol and Investigations. Mel has over fifteen years experience as a Detective and has worked cases ranging from petty thefts to homicides. After his retirement he remained at Fairfield PD as a part-time cold case investigator where he put his expertise to work solving several cold case homicides. Upon hid complete departure from Fairfield he joined Blackrock to continue using his investigative experience on background investigations. 

Shalene Weibert – Investigator
Police Officer (Retired)
Shalene retired from Clovis Police Department after eleven years as a Patrol Officer, Field Training Officer, Detective, and Background Investigator. After her retirement, Shalene became self-employed and continued conducting background investigation and successfully completed a Polygraph Examiner Course. 

Jim Mayoral – Investigator
Police Sergeant (Retired)
Jim has over 30 years experience in the law enforcement field. He has worked in numerous positions during his career including; Field Training Officer, Detective, Gang Unit Supervisor, and Sergeant and has over 15 years of experience with criminal and administrative investigations. Jim conducts background investigations and workplace investigations