NCIS follows a fictional team of Naval Criminal Investigative Service Major Case Response Team special agents based at the Washington, D.C. field office in Washington Navy Yard. In real life, the field office is based at the nearby Joint Base Anacostia-Bolling, while the Navy Yard is home to the museum and several military commands within the Department of the Navy.
The NCIS is the primary law enforcement and counterintelligence arm of the United States Department of the Navy, which includes the United States Marine Corps.
