What is kevin byrnes nypd?

As an AI language model, I do not have access to current or personal information about individuals. However, based on publicly available information, Kevin Byrnes is a retired New York City Police Department (NYPD) detective who served in the department for 34 years. During his time in the NYPD, Byrnes worked in various capacities, including the detective bureau, robbery squad, and organized crime control bureau. He was also involved in high-profile cases, such as the investigation of the 1993 World Trade Center bombing. Byrnes has since retired from the department and currently works as a private investigator.