inspector wore a single star on his epaulettes until 1936, when this changed to a star over two bars to accommodate the new rank of junior station inspector (wearing a star over one bar). United States In the United States, the term inspector can have very different meanings depending on the law enforcement agency. Municipal police An inspector in a US municipal police department is more likely to be a senior executive officer, analogous to a Commonwealth police superintendent or chief superintendent. It may also be a title held by a supervisor of detectives. In the New York City Police Department, a deputy inspector is one grade above captain, wearing the insignia of a military major, and an inspector is another grade higher, wearing the insignia of a military colonel. In the Philadelphia Police Department, a staff inspector is a grade above captain and an inspector is another grade higher, with the insignia of a lieutenant colonel. An inspector is also two grades above a captain in the Baltimore Police Department, Nassau County Police Department and Suffolk County Police Department. Inspector is more rarely used as a rank that is one grade above captain, such as in the Metropolitan Police Department of the District of Columbia. This is equivalent to a major or commander in other departments. The Los Angeles Police Department formerly had a rank of inspector for this purpose. It was changed to commander in 1974. In the police departments of Hayward, California, Oklahoma City and formerly in Berkeley, California, inspector was the rank held by a senior detective. In the San Francisco Police Department, inspector is the normal title for a detective. Unlike detectives in most other departments, inspectors in San Francisco always have supervisory duties. This is one of the few modern remaining cases of inspector being used as a title for detectives. A few other police or sheriff's departments, such as the Portsmouth, Rhode Island police department, also use the title in that capacity. Inspector is sometimes used as the title for internal affairs investigators within a police or sheriff's department, including in Florida's Alachua County Sheriff's Office. State police In the Wisconsin State Patrol, and others, inspectors are state troopers assigned to the motor carrier safety inspection unit where they enforce trucking laws and regulations. The Michigan State Police recognizes inspector as a formal rank. Unlike municipal or county police/sheriffs' inspectors, Michigan State Police