Mark Guerra to Lead FDNY During 8-Day Transition Ahead of New Commissioner

By Y.M. Lowy

On Tuesday, Mayor Eric Adams appointed Mark Guerra as the 36th Commissioner of the FDNY, a role he will hold for just eight days until Commissioner Mamdani’s pick takes office on January 1. The next commissioner, Lillian Bonsignore, a retired FDNY EMS chief with 31 years of experience, has already been chosen to lead the department under the new administration.

Despite the short timeframe, Guerra, a 37-year FDNY veteran, will lead the Department through the transition into a new year and administration. He began his career as a firefighter at Engine 237 and Ladder 124 in Brooklyn, and was promoted to Lieutenant in 1994 at Ladder 112. In 2002, he became Captain at Engine 214, and in 2019 was promoted to Battalion Chief of Battalion 35.

Guerra has also served as Executive Officer to Commissioner Daniel Nigro and First Deputy Commissioner to Commissioner Robert Tucker.

Even in just over a week, Guerra’s leadership will help ensure a smooth handoff as the FDNY prepares for the incoming administration.

photo: Justin Persaud/Mayoral Photography Office.