The Port Authority's executive who oversees all security operations will retire in January.

Joseph Dunne, a 32-year veteran of the NYPD, was appointed chief security officer in 2012 after the position was created.

Dunne, a former first deputy commissioner in the NYPD, took command in the wake of several high-profile security breaches, including a Jet Ski rider who slipped through a $100 million security system at Kennedy Airport. Dunne managed the 1,800 officers of the PA, as well as the private security contractors and firefighting programs within the bistate agency.

“After nearly 45 years of serving in law enforcement and in public and private security roles, it’s time for me to move on to what’s most important to me — my family and my beloved grandchildren,” Dunne said.

 Dunne will be succeeded by Thomas Belfiore, a 20-year NYPD vet and former director of security for Major League Baseball.