NCIS stands for Naval Criminal Investigative Service. It is a long-running procedural television series set in Washington, D.C. The show follows a team of special agents who investigate crimes involving the U.S. Navy and Marine Corps, including murder, terrorism, and espionage.
Note: The provided meaning of the answer is for the latest New York Times crossword puzzle clue: Police procedural that premiered in 2003. Explanations are generated by AI and may be inaccurate.