SEHIA EXECUTIVE BOARD 2021-2022

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Mark was born and raised in Boston Massachusetts. In 1985, Mark began his Law Enforcement career with the Braintree Police Department and later transferred to the Amtrak Police Department, Boston District.

In 1993, Mark moved to Florida and continued his career with the Seminole County Sheriff’s Office, where he where he retired as a Patrol Sergeant, after 33 years of Law Enforcement experience. Mark was a Police Academy Instructor at Seminole State College.

Throughout his career, his positions and assignments include Peer Support Unit, Critical Incident Stress Management Team, Public Information Officer and in-service training Instructor.

During his career, Mark developed mental health issues and attempted suicide. He is very open speaking about these issues and his wellness.

Mark is a Co-founder of Protecting the Guardian. He is a Technical Advisor and Mental Health Liaison with In The Line of Duty Video’s, and a Member of International Law Enforcement Educators and Trainers.

As an advocate for Law Enforcement Officer and First Responder Mental Health/Suicide Prevention/Wellness and Education, he has been a guest on radio, tv, podcasts, conferences, webinars, books and magazines. He has appeared in training videos, a music video and is a motivational speaker.

407.670.5279

markdibona@sehia.org

Denise grew up in mid-Michigan with her parents and three older sisters. She began her career in law enforcement in 1982 as a dispatcher and corrections officer for the Shiawassee County Sheriff's Department. In 1995, Bentley became a trooper for the Michigan State Police and was assigned out of recruit school to the MSP Lakeview Post.

While working as a trooper, Bentley also became a Field Training Officer, Department Recruiter, Background Investigator and a specialist in the investigation of the sexual abuse of children and adults. Bentley was a negotiator for the Emergency Support Team, a firearms instructor for the 119th Trooper Recruit School, an academic at Ferris State University and a board member for the Michigan Association of Hostage Negotiators. In 2002, Bentley was promoted to the MSP Rockford Post as a uniform sergeant where she worked as a supervisor for four years before becoming a detective sergeant.

As a detective sergeant, Bentley was also a member of the Kent Metro Cold Case Team and worked dignitary protection assignments with the US Secret Service. She was a member of the Kenty County Gun Board, the Muskegon County Child Abuse Council and served on Child Death Review Teams for both Kent and Muskegon counties. Bentley was a member of the homicide task force in Muskegon County and was recognized by Blue Cross Blue Shield of Michigan for her work on multiple fraud investigations.

Bentley retired from the Michigan State Police in May 2020 and lives in Twin Lake, MI with her husband, Clark, who is a scuba instructor. Their son, Jordan, lives with his family in St. Augustine, FL.  Bentley is an avid scuba diver and enjoys traveling with her family and friends.
denisebentley@sehia.org 

Erin has been a detective with the Casselberry Police Department since 2012. Detective Carr began her career with Casselberry Police Department in 2008 and has worked in the uniform patrol division, criminal investigations, and as a traffic crash re-constructionist. 

Detective Carr is a general assignment detective and has investigated a multitude of crimes including homicides. She frequently assists neighboring jurisdictions with their cases and believes information sharing, teamwork, and networking are the keys to solving violent crime. 

407.262.7616 X 1056

erincarr@sehia.org

Tiffany is the current Coroner Investigative Forensic Supervisor for the Clark County Coroner/Medical Examiner's Office in Las Vegas, Nevada.  Supervisor Brown began her career with Clark County’s Office of the Coroner/Medical Examiner in 2010. Hired as a Coroner Investigator, Tiffany quickly distinguished herself and was promoted to the position of Senior Coroner Investigator where she oversaw various shifts of the Investigative Unit. 

She is a Registered Medicolegal Death Investigator and has investigated well over 2000 coroner’s cases. She has been nationally recognized for her role in the “1 October” mass shooting in Las Vegas and speaks nationally on their response to this incident. Tiffany serves as co-coordinator for the Coroner Training Academy, which is a locally sponsored investigator course including both classroom and field training. 

Grimmett manages all unidentified human remains cases within Clark County, and has assisted in establishing national standards as a member of the National Institute of Justice (NIJ) National Cold Case Working Group. Additionally, Tiffany actively participates in the Domestic Violence Fatality Review Board, the Trauma Intervention Program Advisory Board, and is the lead investigator for the Child and Infant Response (CAIR) Team. Tiffany is proactive in planning Mass Fatality Preparedness for Clark County’s Office of the Coroner/Medical Examiner. She holds the status of Diplomat with the American Board of Medicolegal Death Investigators, is trained in psychological autopsy investigation, and a lifelong native of Las Vegas, Nevada. 

tiffanybrown@sehia.org

Craig Beers began his career as a Deputy Sheriff in 2007 with the Volusia County Sheriff’s Office in Florida.  After a few years on patrol, he pursued his goal to become a criminal investigator.  Since 2011, Craig has been in investigations and specialized in investigating violent crimes.  He was then assigned to the Volusia County Sheriff’s Office Major Case Unit, where he investigated homicides and suspicious deaths.   

In 2015, Craig made the decision to advance his investigative experiences and pursued a career with the Florida Department of Law Enforcement.  He has worked a variety of high-profile cases since being employed with the FL Department of Law Enforcement, including officer involved shooting investigations, public integrity/corruption investigations, homicides, narcotics, and various multi-jurisdictional organized crimes. He is also a member of the Florida Department of Law Enforcement Special Operations Team. Craig is currently assigned to the violent crimes squad, where he investigates homicides, cold case homicides, and robberies.  Craig also has a Bachelor’s Degree in Criminal Justice.

craigbeers@sehia.org

Bill is a native New Yorker with over 22 years’ experience as a Special Agent with the U.S. Government. Most of these years have been with the Naval Criminal Investigative Service (NCIS) working violent and general crimes. As a global organization, NCIS has afforded Bill opportunity to work investigations around the United States, Central America, South America and the Caribbean.  Recently, Bill transferred to the island nation of Singapore for three years where he worked alongside international federal police partners in India, Sri Lanka, Brunei, Indonesia, Vietnam, Singapore and Australia.

Now back in the United States, Bill is again focused on working major and violent crimes that effect our U.S. Navy and United States Marine Corps members’ right here at home. Cold Case investigations have always and continue to be the cases that Bill is the most passionate about. In 2018, Bill served as a member on the Florida Sheriff’s Association Cold Case Advisory Commission and in 2019 solved the first cold case for NCIS that utilized Genealogy.

Bill is a graduate of the University of Buffalo with a Bachelor’s Degree in Accounting.   

billelflein@sehia.org

 Joe Duncan is a detective with the Rutherford County Sheriffs Office in Middle Tennessee. He began his law enforcement career in 2008 and has served in a number of areas.  He served on the Crisis Negotiations Team for 10 years and resigned from the team as the team leader. Joe was a field training officer and currently serves in the Criminal investigation’s Division where he investigates property crimes. Joe is also on the Homicide Team where he investigates homicides and equivocal deaths. He teaches within the department and also trains new detectives. 

Joe is a graduate of the National Forensics Academy Session 53, where he earned a certification in crime scene investigations. He continues to receive investigative discipline training in the areas of homicide, internal affairs, overdose deaths, cell phone forensics, blood stain patter analysis, shooting incident reconstruction, and more. He is a graduate of Faulkner University with a Bachelor’s in Criminal Justice and a Master’s of Justice Administration. 

joeduncan@sehia.org