Chapter VIII

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President - Mark Williamson

Mark Williamson is a Criminal Investigations Sergeant with the Collier County Sheriff’s Office. Mark has been a law enforcement officer for over 20 years and worked in Virginia as an LEO prior to moving to Florida.   Mark has been a member of the Police Unity Tour since 2006.  He feels humbled each year to see so many law enforcement brothers and sisters support one another through the PUT and is honored to join others in keeping the memories of our fallen heroes.

1st Vice President - Dave Northway

Dave Northway is a Public Information Officer and has been with the Tallahassee Police Department since 2001. Dave joined the Police Unity Tour in 2005. Dave works part-time at a local bike shop & tries to fit bike rides in with his wife, who is a Sheriff’s Deputy and fellow PUT member. Dave continues to promote the PUT in the northwest Florida region with local bike rides, golf tournaments and various fundraisers to endorse the survivors and their families.

2nd Vice President - Griggs Wall

Griggs Wall is a Master Police Officer and has been with the Gainesville Police Department (GA) since 1992. For the last 3 years Griggs has been assigned to Gainesville High School as a SRO.  Griggs joined the Police Unity Tour in 2010.  Griggs is married to his wife of 24+ years, Lisa, and they have one son. When not working or with family, Griggs is a year round cyclist riding the roads in the North Georgia mountains.

Treasurer - Hugh Miller

Hugh Miller has previously served as our President. Hugh retired from the Tampa Police Department. He is a charter member of Chapter VIII and has previously served as our President. Hugh started his professional life in the hospitality industry managing restaurants. After being robbed one night he decided he would rather be catching bad guys than being a victim. He started his law enforcement career as a reserve officer in Huntsville, Alabama.

Secretary - Tiwanda Shaw

Tiwanda Shaw is the surviving spouse of Officer Craig L. Shaw of the Lancaster, Texas Police Department. Craig was killed in the line of duty on Father’s Day, July 20, 2010.  Tiwanda joined the PUT in 2011 after not riding a bike in 30 years, knowing this would make Craig proud. She serves as the CEO of the Officer Craig L. Shaw Memorial Foundation & volunteers with the Lancaster Police Department to develop a community outreach program.

Immediate Past President - Mark Trexler

Mark Trexler is a Master Deputy at the Polk County Sheriff’s Office and has been in law enforcement for over 20 years; he has been a member of the Police Unity Tour since 2006. Mark has been both a rider and a support member for the chapter. In his first year riding, Mark rode in honor of a member from his own agency and found that to be a very challenging year. Mark is married to his wife of 20+ years, Dawn, and they have no children. He enjoys being outside riding his bikes or playing in the dirt with his jeep. 

Trustee - Krista Williamson

Krista Williamson has previously served as our President. She has worked for the Collier County Sheriff's Office since 2000 and currently works as a Media Relations Specialist (PIO). Krista started her law enforcement career in 1990 at the Chesapeake Police Department in Chesapeake, Virginia. Krista spent time as both a dispatcher and a law enforcement officer before moving to Florida in 2000. She has been a member of the Police Unity Tour since 2006. 

Trustee - Andy Raphael

Andy Raphael has previously served as our President.  He has been a tour member for 12 years and helped grow the chapter in both central and south Florida. Andy recently retired from law enforcement (Hallandale Beach & Winter Garden Police Departments) after 30 years of service. He has been married to his wife Teresa for 24 years.  Andy truly believes that this organization is what being a part of a law enforcement family is all about.  “In service there is honor”.

Trustee - Jeff Kerr

Jeff Kerr has 23 years experience in law enforcement and is currently a Lieutenant at the York-Poquoson Sheriff's Office. He has been a member of the Police Unity Tour since 2005 and previously served as a Vice President of Chapter IV. Jeff was diagnosed with MS in 2006 and has held several leadership positions with the National MS Society. He has had a highly successful MS bike team since 2006. Jeff also owned and coached a BMX race team from 2010 to 2015. 

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