The FBI has 56 field offices (also called divisions) centrally located in major metropolitan areas across the U.S. and Puerto Rico. These cities are where investigations are carried out, assess local and regional crime threats and work closely with partners on cases and operations. Each field office is overseen by a special agent in charge, except our offices in Los Angeles, New York City, and Washington, D.C., which are headed by an assistant director in charge due to their large size. Within these field offices are a total of about 380 resident agencies located in smaller cities and towns. Resident agencies are managed by supervisory special agents.