Close-up shooting: a bearded brunette man in a gray T-shirt with a nurse girl in a white uniform demonstrates the rules of first aid with a mannequin in front of the public against the background of brick walls and large windows

close-up bearded brunette man gray t-shirt nurse girl white uniform demonstrates rules first aid mannequin public background brick walls large windows healthcare demonstration education clinical skills expertise healthcare professional simulation hands-on practice emergency procedure healthcare industry clinic practical hands health medical equipment learning medical field instructional healthcare education