You Just Don't Know is the powerful and deeply personal story of Lorenzo Rennie Whitehead-a man forged by hardship, elevated by martial discipline, and transformed by a relentless pursuit of purpose.

From a childhood marked by a speech impairment and growing up in Miami's toughest neighborhoods, to becoming a 10th-degree black belt and a decorated police commander, Rennie's life is a testament to resilience, honor, and faith. This memoir takes readers through gripping episodes of his martial arts mastery, police academy challenges, street-level policing, and presidential security details-while shedding light on the values instilled by a heroic mother and a tight-knit community.

But this book is more than a tale of triumph. It's a meditation on leadership, sacrifice, redemption, and the unseen battles many face. From the dojo to the precinct, from the projects to the White House detail-every chapter is a hard-earned lesson in grit and purpose.

For readers looking for inspiration, discipline, and real-world life lessons, You Just Don't Know is a raw and uplifting narrative that reminds us: behind every badge, belt, and badge of honor is a story that needs to be told.