30566 Fire Helicopter was a 35 piece City promotional set with 1 minifig released in 2021.
Fire is a subtheme of City that was introduced in 2005 and currently consists of 60 sets.
The LEGO City theme is based on city life with the sets depicting city and emergency services, police, fire, airport, train, construction, and civilian services. The City theme proceeded LEGO Town which was replaced with LEGO World City in before it was rebranded as City in 2005.
