A person in black and gray gloves is adjusting a blue water heater, with a white label on the heater indicating "Use Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution Caution