Overview: Today, Maddie is learning about helpful vehicles. She goes on a training rescue mission with a lifeboat team to find out how the equipment on a lifeboat works. She shows us how the special thermal-imaging cameras are used to find people who are in trouble - even at night! Next, she visits a quarry to see how gravel, sand, cement and water are mixed together to make concrete. Maddie uses her special cameras to follow the journey the ingredients take from the quarry to the plant where everything is mixed together. We see how the mixing lorry then takes the concrete to the building site and how it is poured to make a road!