Park ranger
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A ranger, park ranger, park warden, or forest ranger is a person entrusted with protecting and preserving parklands – national, state, provincial, or local parks.
Jorge Cieslik, a park ranger in the Iguazú National Park in Argentina, on the border with Brazil and Paraguay
A vehicle used by rangers responsible for maintaining Hadrian's Wall Path in the north of England.
Park Rangers (guardaparques, in Spanish) patrolling in the Iguazú National Park in Argentina, on the border with Brazil and Paraguay
Emergency service
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Emergency services and rescue services are organizations that ensure public safety, security, and health by addressing and resolving different emergencies. Some of these agencies exist solely for addressing certain types of emergencies, while others deal with ad hoc emergencies as part of their normal responsibilities. Many of these agencies engage in community awareness and prevention programs to help the public avoid, detect, and report emergencies effectively. Emergency services are often considered first responders, and typically have dedicated emergency vehicles.
Police, fire, and medical services at the scene of a traffic collision in New South Wales, Australia
Multiple emergency services at the scene of a traffic accident in Vaughan, Ontario
Lifeguards on duty at Santa Monica State Beach in Los Angeles County, California
Ski patrol team at Ski Montcalm in Quebec, Canada