Cassandra Helmuth

Cassandra Helmuth is a Deputy District Attorney with the San Bernardino County District Attorney’s Office. Ms. Helmuth joined the District Attorney’s Office in 2013 and served in various trial units before joining the human trafficking unit in 2016. She was designated as the lead DDA of the human trafficking unit in 2017 and for the next 7 years specialized in the prosecutions of pimping, pandering and human trafficking cases.  In that role, she collaborated with the San Bernardino County Human Trafficking Task Force and other local law enforcement agencies in their efforts to combat human trafficking in the community.

Ms. Helmuth continues to work with local non-profit organizations in their support of victims of human trafficking.  Ms. Helmuth has instructed in the field of human trafficking to both local and national audiences including law enforcement, military, attorneys, community groups and other professionals.  She is currently assigned to the gang unit.

Ms. Helmuth received her B.A. from University of California, Santa Barbara, and her J.D. from University of San Diego School of Law.

Courtney Martin

Courtney Martin is a Deputy District Attorney at the Sacramento County District Attorney’s Office. Courtney began working on human trafficking cases in 2019. Under her tenure as the solo human trafficking prosecutor in Sacramento County, the yearly rate of successful human trafficking prosecutions tripled. She has secured felony convictions with prison sentences in over 100 cases involving human trafficking and exploitation, including 10 jury trials.

Courtney is an instructor for the POST-certified Robert Presley Institute of Criminal Investigation courses on human trafficking. She has presented at the California District Attorneys Association’s Human Trafficking Seminars, at the Human Trafficking Summit hosted by the Western States Information Network (WSIN), and at dozens of community events designed to bring attention to and educate about human trafficking.

Donna Bakich

Ms. Bakich is currently a Deputy District Attorney assigned to the Monterey County District Attorney’s Office Sexual Assault and Child Abuse Unit, with the additional responsibility of handling all human trafficking cases.  She has been a prosecutor for the past seven years, beginning her career in criminal prosecution at the Merced County District Attorney’s Office prior to arriving at the Monterey County District Attorney’s Office.

Ms. Bakich received a bachelor’s degree from California State University at Monterey Bay in 2004 in the field of Human Communication with an emphasis in Pre-Law.  In 2007, Ms. Bakich received a master’s degree from San Jose State University in the field of Justice Studies.  And in 2012, Ms. Bakich received a juris doctorate from Southern Illinois University at Carbondale, participating in two internships within the criminal justice field in both Missouri State and Monterey County.  During her career as a prosecutor, she has conducted no less than 20 jury trials, and has completed no less than 140 hours of continuing legal education, at least 30 hours specifically dedicated to human trafficking and human trafficking-related issues.

Jason Collins

Jason Collins is a detective with the Sacramento Police Department and has been investigating human trafficking cases since 2017. He is also a task force officer with various federal agencies. Detective Collins has investigated many complex investigations including being the case agent on a federal human trafficking wiretap investigation, which ended with he successful prosecution of two long-time traffickers. He has testified as an expert in topics related to human trafficking in both state and federal court over a dozen times.  

Detective Collins is the course coordinator for the POST-certified Robert Presley Institute of Criminal Investigation Human Trafficking Investigation Foundational Course, and is an instructor at the ICI Advanced Human Trafficking Course. Detective Collins has presented at the Western States Information Network (WSIN) Human Trafficking Summit, and the California District Attorney’s Association Human Trafficking Seminar, along with dozens of other individual trainings to law enforcement, citizen’s academies, and community groups across the state.    

Jeffrey Walker

Jeffrey Walker is a 35-year veteran of the Los Angeles County Sheriff’s Department, whose previous deputy assignments included the Hall of Justice Jail, Lakewood Station, and Special Victims Bureau’s Child Abuse Detail. He promoted to sergeant in 2006 and has worked at Men’s Central Jail, Temple Station, Major Crimes Bureau – Vice Detail, and his current assignment as a founding member of the Los Angeles Regional Human Trafficking Taskforce.

He served on the original working committee for the Los Angeles County First Responder Protocol, which has become a national model on how other cities and counties will respond to commercially sexually exploited children. 

Sgt. Walker served as the lead coordinator for the annual “Operation Reclaim Rebuild”, a statewide enforcement surge operation targeting traffickers and sex buyers.

Juan Reveles

Juan Reveles retired in 2023, after 30 years of service with the Anaheim Police Department in Orange County CA. Throughout his career, Juan worked a variety of assignments before promoting to sergeant in 2006. He supervised the gang unit for five years, from 2009-2014. During his tenure in gangs, he led several long-term investigations in partnership with FBI, ATF, DEA and HSI.

In 2014, Juan was assigned to lead the newly created multi-agency team known as the Orange County Human Trafficking Task Force (OCHTTF), which he led until his retirement. The OCHTTF was one of the first three federally funded task forces across the nation. Being at the forefront in the developing field of human trafficking investigations, Juan led his team in creating new investigative and operational techniques to assist in recovering victims and bringing pimps/traffickers to justice. The new techniques proved to be successful resulting in four positive case law decisions, one by the state supreme court. The new techniques also resulted in a 95% filing rate encompassing over 300 cases in the span of nine years.

Juan’s team hosted several law enforcement agencies and prosecutors who came to Orange County to shadow the task force during human trafficking operations. In addition to supervising one of the lead human trafficking task forces in the state, Juan was instrumental in organizing the Orange County community in building a coordinated response to address human trafficking. Juan partnered with Waymakers, a victim advocate group, in bringing over 50 organizations made up of NGO’s, faith-based, medical field, civic groups and government entities to come together to support the task force in a broad spectrum of needs. To date, this group continues to meet monthly and their assistance continues to be an integral part of the task force’s success.

Juan has provided human trafficking training to law enforcement, prosecutors and to personnel in every field mentioned above. Juan led his team in teaching the successful investigative techniques to law enforcement and prosecutors across the state. He was part of the collaborative team, who upon request, went across the state providing training to county entities on how to build a successful collaborative to address human trafficking in a coordinated county-wide level.

Kimberly Wah

Rick Geiss

Rick Geiss has been with the California Highway Patrol for 21 years and has been an investigator for the department since 2012.  Investigator Geiss has been assigned to the Orange County Human Trafficking Task Force since 2019, where he has been tasked with investigating pimping, pandering, sex trafficking and sexual exploitation case.  He has extensive experience in conducting proactive and undercover operations and regularly conducts in-field training for officers and detectives from around the state.

He is a court recognized expert in the field of human trafficking and has testified as such in numerous court hearings.  Investigator Geiss regularly teaches an introductory class on, human trafficking investigations, for patrol officers and has also presented training in this field to hospital staff, hospitality workers, victim advocates and school employees.

Tyson McCoy

Tyson McCoy is a career prosecutor who has spent the bulk of his career prosecuting serious and violent cases in California.  

He has trained hundreds of professionals on the topic of human trafficking, including police, doctors, nurses, social workers, military investigators, prosecutors, school administrators, and others.

Most recently, he worked with California State Senator Shannon Grove in drafting California Senate Bill 14, which made child sex trafficking a serious crime and “strike” offense under California’s Three Strikes Law.   As a result, child sex traffickers are now classified as serious criminal offenders and subject to increased criminal penalties under California law.

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