A kindergarten-level introduction to garbage trucks, covering their purpose, where they are found, the people who work with them, and such defining features as their hoppers.
A kindergarten-level introduction to rescue boats, covering their divers, equipment, role in rescuing, and such defining features as their lights.
A kindergarten-level introduction to ambulances, covering their EMTs, equipment, role in rescuing, and such defining features as their sirens.
