Special police usually describes a police force or unit within a such an agency whose duties and responsibilities are significantly different from other forces in the same country or from other personnel within the same agency, although there is no consistent international definition. Generally, special police personnel hold some level of police powers; sometimes they hold the same powers and authority of other law enforcement officers within their jurisdiction, but at a minimum they will typically possess detainment and arrest authority. 'Special police' is also occasionally used when referring to an 'elite' law enforcement agency or unit, such as special weapons and tactics (SWAT) units or other similar paramilitary forces who have some level of police power. 'Special police' may also be used to describe individuals who are granted police powers incidental to their primary duties, such as welfare fraud investigators, certain security guards, child welfare investigators, and agricultural inspectors. Special police personnel may be armed or unarmed.