What is a safety feature that Vancouver International Airport has implemented?

The implemented safety feature at Vancouver International Airport is advanced firefighting and emergency services. This capability is vital for ensuring the safety of passengers and aircraft operations. Such services are equipped to respond quickly and effectively in the event of an emergency, such as aircraft incidents or fire outbreaks. Investing in advanced firefighting systems, well-trained personnel, and emergency response protocols enhances the airport's ability to protect life and property, reinforcing the overall safety infrastructure of the airport.

In contrast, while increased terminal space, lower passenger fees, and extended runway lengths may contribute to operational efficiency or comfort, they do not directly pertain to safety features. These aspects are more related to airport capacity and service costs rather than the emergency preparedness and safety response mechanisms that are essential in a crisis situation.