 Caroline meets a dog that has been trained to search for snakes in the Florida Everglades. Kim drives a retro race car with a 21st century makeover. Hayden finds a self-propelled airplane that can be used for espionage. Graham gets a model of his own head put on a table soccer table. Adam and Jamie operate a boat with its trailer still attached. Anna looks at a $25 device that will save 10,000 young lives every day.