A detective is an investigator, usually a member of a law enforcement agency. They often collect information to solve crimes by talking to witnesses and informants, collecting physical evidence, or searching records in databases. This leads them to arrest criminals and enable them to be convicted in court. A detective may work for the police or privately.
The New York State Police (NYSP) is the state police of the U.S. state of New York; it is part of the New York State Executive Department and employs over 5,000 sworn state troopers and 711 non-sworn members.
The Air Force Office of Special Investigations is a U.S. federal law enforcement agency that reports directly to the Secretary of the Air Force. OSI is also a U.S. Air Force field operating agency under the administrative guidance and oversight of the Inspector General of the Department of the Air Force. By federal statute, OSI provides independent criminal investigative, counterintelligence and protective service operations worldwide and outside of the traditional military chain of command. Proactively, OSI identifies, investigates, and neutralizes serious criminal, terrorist, and espionage threats to personnel and resources of the Air Force, Space Force, and the U.S. Department of Defense, thereby protecting the national security of the United States.
The Massachusetts State Police (MSP) is an agency of the Commonwealth of Massachusetts' Executive Office of Public Safety and Security, responsible for law enforcement and vehicle regulation across the state. As of 2022, it has 2,067 sworn troopers and 611 civilian support staff for a total of 2,678 personnel, making it the largest law enforcement agency in New England. The MSP is headed by Interim Lieutenant Colonel Jack Mawn.
The Pennsylvania State Police (PSP) is the state police agency of the U.S. state of Pennsylvania, responsible for statewide law enforcement. The Pennsylvania State Police is a full service law enforcement agency which handles both traffic and criminal law enforcement. The Pennsylvania State Police was founded in 1905 by order of Governor Samuel Pennypacker, by signing Senate Bill 278 on May 2, 1905. The bill was signed in response to the Great Anthracite Strike of 1902. Leading up to the Anthracite Strike, private police forces were used by mine and mill owners to stop worker strikes. The inability or refusal of local police or sheriffs' offices to enforce the law, directly influenced the signing of Bill 278. The Anthracite Strike lasted from May 15 to October 23, 1902, and ended with the help of Theodore Roosevelt, the sitting president at the time.
The Vermont State Police (VSP) is the state police agency for the U.S. state of Vermont. The force has jurisdiction throughout the entire state. The Vermont Public Safety Commission directs policy and selects the commander. The commander is Colonel Matthew Birmingham. The Commissioner of the Vermont Department of Public Safety is Michael Schirling. There are 332 sworn state troopers.
The Michigan State Police (MSP) is the state police agency for the U.S. state of Michigan. The MSP is a full-service law enforcement agency, with its sworn members having full police powers statewide.
The Delaware State Police (DSP) is a division of the Delaware Department of Public Safety and Homeland Security and is responsible for traffic regulation and law enforcement across the state of Delaware, especially in areas underserved by local police departments. The DSP is headquartered in the capital Dover, Delaware.
The Washington State Patrol (WSP) is the state patrol agency for the U.S. state of Washington. Organized as the Washington State Highway Patrol in 1921, it was renamed and reconstituted in 1933. The agency is charged with the protection of the Governor of Washington and the grounds of the Washington State Capitol; security aboard the vessels and terminals of the Washington State Ferries; law enforcement on interstate and state highways in Washington; and providing specialized support to local law enforcement including laboratory forensic services, mobile field forces during periods of civil unrest or disaster, and tactical teams. The State Fire Marshal's Office, responsible for operation of the Washington State Fire Training Academy and for certain aspects of civil defense mobilization, is a component office of the Washington State Patrol, and the State Patrol is the managing agency of the Washington Fusion Center, which coordinates anti-terrorist and anti-organized crime activities within Washington.
The Maryland State Police (MSP), officially the Maryland Department of State Police (MDSP), is the official state police force of the U.S. state of Maryland. The Maryland State Police is headquartered at 1201 Reisterstown Road in the Pikesville CDP in unincorporated Baltimore County.
The Illinois State Police (ISP) is the state police agency of the state of Illinois. The Illinois State Police is responsible for traffic safety on more than 300,000 miles of total roadway, including 2,185 miles of Interstate Highways and 15,969 miles of State Highways. Currently, almost 3,000 sworn and civilian personnel make up the Illinois State Police.
The Louisiana State Police is the state police agency of Louisiana, which has jurisdiction anywhere in the state, headquartered in Baton Rouge. It falls under the authority of the Louisiana Department of Public Safety & Corrections. It is officially known in that organization as the Office of State Police.
The Idaho State Police (ISP) is the statewide law enforcement agency for the State of Idaho. It began as the Bureau of Constabulary, created on May 18, 1919, under the new Department of Law Enforcement, to detect and investigate crime, "order abatement of public nuisances and to enforce such orders by appropriate court action, to suppress riots, prevent wrongs to children and animals that are inhibited by law." The state constabulary was also charged with the organization of various state, county and municipal peace officers. The bureau was dissolved by the state legislature in 1923.
The Kentucky State Police (KSP) is a department of the Kentucky Justice and Public Safety Cabinet, and the official State Police force of the Commonwealth of Kentucky, responsible for statewide law enforcement. The department was founded in 1948 and replaced the Kentucky Highway Patrol. The department's sworn personnel hold the title State Trooper, and its nickname is The Thin Gray Line.
The Oklahoma Highway Patrol (OHP) is a major state law enforcement agency of the government of Oklahoma. A division of the Oklahoma Department of Public Safety, the OHP has traffic enforcement jurisdiction throughout the state. OHP was legislatively created on July 1, 1937, due to the growing problem of motor vehicle collisions, the expansion of highway systems, and the increase in criminal activities.
The Maine State Police (MSP) is the state police agency for Maine, which has jurisdiction across the state and was created in 1921.
The Mississippi Highway Patrol is the highway patrol and acting state police agency for the U.S. state of Mississippi, and has law enforcement jurisdiction over the majority of the state.
The West Virginia State Police Academy is a law enforcement training institution, operated by the West Virginia State Police, located in Institute, West Virginia. The academy trains West Virginia troopers for the State Police force and newly hired municipal, university police officers, sheriff deputies, motor carrier enforcement and conservation officers from across the state. It and the Fairmont State University Police Academy in Fairmont, West Virginia are the only law enforcement training schools in West Virginia.
The following outline is provided as an overview of and introduction to law enforcement:
In the United States, the state police is a police body unique to each U.S. state, having statewide authority to conduct law enforcement activities and criminal investigations. In general, state police officers or highway patrol officers, known as state troopers, perform functions that do not fall within the jurisdiction of the county sheriff, such as enforcing traffic laws on state highways and interstate expressways, overseeing the security of the state capitol complex, protecting the governor, training new officers for local police forces too small to operate an academy and providing technological and scientific services. They support local police and help to coordinate multi-jurisdictional task force activity in serious or complicated cases in those states that grant full police powers statewide.
