Elon Musk warns 'people will die' over Mamdani's FDNY commissioner pick, Lillian Bonsignore

"People will die because of this," the billionaire provocateur, who served in President Donald Trump's administration, wrote on X. "Proven experience matters when lives are at stake."

She retired in 2022.

"The first woman to achieve a 4-star rank in FDNY history, she's joining us as the FDNY Commissioner to bring her crisis leadership and operational expertise to this administration," Mamdani wrote on X Tuesday.

Bonsignore will be only the second woman to hold the position and the first openly gay person in the role.

Mamdani quickly responded to Musk on X, writing on Saturday, "Experience does matter, which is why I appointed the person who spent more than 30 years at EMS. You know, the workforce that addresses at least 70% of all calls coming into FDNY?"

Fox News Digital has reached out to the FDNY and Mamdani's team for comment.

"I am honored, so honored, and humbled to stand before you as the new fire commissioner," Bonsignore said at a Tuesday news conference. "This appointment represents a significant responsibility, one I accept with humility, dedication and a deep sense of commitment to the city and its people."

"Under our administration, keeping New Yorkers safe and protected has always been our North Star, and having principled, qualified public servants in place to lead our critical public safety agencies is crucial to fulfilling that goal; there's no person who meets those high standards (like) Commissioner Mark Guerra," Adams said Tuesday. 

"Lillian's light is one that can't be dimmed by anything else that takes place," Mamdani said in response, according to FOX 5. "The mayor is free to continue to be the mayor until the end of this year and make decisions as such."