Manhattan Police Department Promotes Garrison to Commander, Diaz to Sergeant

Article Summary: The Manhattan Police Department solidified its command structure with the promotions of William Garrison to the rank of Commander and Bryan Diaz to Sergeant, who were both officially sworn in at the village board meeting.

Manhattan Police Promotions Key Points:

• Commander William Garrison is a 20-year law enforcement veteran and a graduate of Northwestern’s prestigious School of Police Staff and Command.

• Sergeant Bryan Diaz brings over nine years of law enforcement experience to his new leadership role.

• Both officers were sworn in by Mayor Mike Adrieansen in a ceremony attended by their families and fellow officers.

MANHATTAN – The Manhattan Police Department celebrated the promotion of two of its officers Tuesday night, filling key leadership roles within the department. William Garrison was sworn in as Commander and Bryan Diaz was sworn in as Sergeant before the Village Board and a room full of family and colleagues.

Mayor Mike Adrieansen administered the oath of office to both men, highlighting their extensive experience. Garrison, a 20-year veteran, is a graduate of the Northwestern Center for Public Safety’s School of Police Staff and Command. Diaz has over nine years of law enforcement experience, with expertise in truck enforcement and field training.

“I’m humbled and appreciative of the chief and the police department supporting me in this role, and I look forward to doing some good things,” Commander Garrison said after being sworn in.

Sergeant Diaz also thanked the village and his department. “It’s been a great move coming to Manhattan,” he said. “From the citizens, the trustees and the police department, everyone’s had my back and welcomed me. So, I appreciate everything you guys have done for me.”

The promotions reaffirm the village’s commitment to public safety by completing the command structure within the police department.