Discusses cars, trucks, boats, and aircraft used by fire fighters, police, Coast Guard, and others who help save lives.

"Earth borers are huge, amazing tools that help build tunnels. Readers will dig deep underground with these massive machines to learn how they chew up rocks and dirt and help engineers build new things far below Earth's surface. Vibrant full-color photographs showcase these large borers and the tunnels they create, which are used by cars, trucks, and even trains to take people from place to place. This innovative title also looks at the environmental...