06/12/2026
The Navajo Police Department proudly announces the promotion of Sergeant Crystal Thinn to the rank of Police Lieutenant.
Lieutenant Thinn has demonstrated exceptional leadership, professionalism, and dedication throughout her law enforcement career. Her commitment to serving and protecting the Navajo Nation, mentoring fellow officers, and upholding the values of the department has earned her this well-deserved promotion.
As a Police Lieutenant, she will oversee the Navajo Police Training Academy. Lieutenant Thinn will collaborate with multiple agencies and departments to have a successful academy.
Chief Silversmith, Deputy Chief Leonard Williams and Deputy Chief Donnie Kee were in attendance to congratulate Thinn, gave words of encourage and the value of what challenges may come with upholding a leadership position.
Chief Silversmith stated, “Congratulations, Lieutenant Thinn, on your well-deserved promotion. Throughout your career, you have demonstrated professionalism, leadership, and dedication to the Navajo Police Department and the communities we serve. As you assume this new role, there will be increased responsibilities, expectations, and challenges, but I am confident in your ability to meet them with integrity and commitment.” Chief Silversmith added, “Thank you for your service and for your willingness to accept this important responsibility. I also extend my gratitude to your family for their continued support and dedication throughout your law enforcement career.”
Crystal Thinn stated, “As I accept the honor of serving as a Police Lieutenant with the Navajo Police Department, I am committed to building upon the leadership of those who came before me. I will work to blend Diné values and teachings with modern policing practices to strengthen leadership, training, and service to our communities. My goal is to help develop future leaders who serve the Navajo Nation with integrity, respect, accountability, and cultural pride. Ahéhee’ dóó baa’ahánisin.”
Please join us in congratulating Lieutenant Crystal Thinn on this significant career achievement and wishing her continued success as she serves the Navajo Nation and the Navajo Police Department.
Congratulations, Lieutenant Thinn!