Ключевые слова: 911, application, assistance, blank, brave, cellphone, city, crew, danger, display, fire, firefighters, firefighting, firehouse, fireman, firemen, firetruck, hand, help, heroes, internet, male, man, message, mobile, mockup, network, people, phone, protection, protective, red, rescue, rescuer, safety, screen, service, services, smart, smartphone, smoke, station, technology, telephone, truck, trucks, using, vehicle, volunteer, white,