In 2017, O'Hara was promoted to captain and appointed to oversee the implementation of a federal consent decree mandating the City of Newark reform its policies and training around police use of force, civilian oversight, supervision, internal affairs, and procedures for stops, searches, and arrests.

Furthermore, Harvey recognized O'Hara's efforts in implementing policies that went beyond the requirements of the agreement, which resulted in significant progress in the police force's reform in Newark.

[12] From 2020 until being appointed Public Safety Director, O'Hara served as deputy chief and Commander of the Accountability, Engagement, and Oversight Bureau of the Newark Police Division.

[21] In 2023, the MPD partnered with the U.S. Department of Justice as part of the National Public Safety Partnership initiative, providing officers with training and technical assistance.

[23] "Operation Safe Summer" is an initiative by the Minneapolis Police Department aimed at addressing crime hotspots in the city by increasing law enforcement presence.

During this operation, both uniformed and undercover officers are deployed in specific areas known for higher crime rates, such as the North Side, downtown, and along East Lake Street.

The operation has reported positive outcomes, with a 33% decrease in homicides and 37% fewer gunshot victims in the first half of 2023 compared to the previous year, alongside an 18% increase in gun seizures.

[24] In 2023, Chief Brian O'Hara expressed concerns regarding the lowest staffing levels in years for the Minneapolis Police Department, with the city's budget providing for 731 sworn officers, a number mandated by law, while only 564 were available for street duty.

Adjustments included reallocating funds for immigration services, supporting a city attorney's office position,[26] and community safety projects1.