In the United States, ambulance services provided by a local government are often referred to as "third service" EMS (the fire department, police department, and separate EMS forming an emergency services trio) by the employees of said service, as well as other city officials and residents. Government ambulance services also have to take civil service exams just like government fire departments and police. In the United States, certain federal government agencies employ emergency medical technicians at the basic and advanced life support levels, such as the National Park Service and the Federal Bureau of Prisons. In countries such as the United States, Japan, France, and parts of India; ambulances can be operated by the local fire or police services. Fire-based EMS is the most common model in the United States, where nearly all urban fire departments provide EMS and a majority of emergency transport ambulance services in large cities are part of fire departments. It is somewhat rare for a police department in the United States to provide EMS or ambulance services, although many police officers have basic medical training. Charities or non-profit companies operate some emergency medical services. They are primarily staffed by volunteers, though some have paid employees. These may be linked to a volunteer fire service, and some volunteers may provide both services. Some ambulance charities specialize in providing cover at public gatherings and events (e.g. sporting events), while others provide care to the wider community. The International Red Cross and Red Crescent Movement is the largest charity in the world that provides emergency medicine. (in some countries, it operates as a private ambulance service). Other organisations include St John Ambulance, the Order of Malta Ambulance Corps and Hatzalah, as well as small local volunteer agencies. In the United States, volunteer ambulances are rarer, but can still be seen in both metropolitan and rural areas (e.g. Hatzalah). A few charities provide ambulances for taking patients on trips or vacations away from hospitals, hospices or care homes where they are in long-term care. Examples include the UK's Jumbulance project. Some ambulances are operated by commercial companies with paid employees, usually on a contract to the local or national government, Hospital Networks, Health Care Facilities and Insurance Companies. In the USA private ambulance companies provide 911 emergency services in large cities as well as most rural areas by contracting with local governments. In areas that the local County or City provide their own 911 service, private companies provide discharges and transfers from hospitals and to/from other health related facilities and homes. In most areas private companies are part of the local government Emergency Disaster plan, and are relied upon heavily for the overall EMS response, treatment and recovery.