Drug-sniffing dogs have become an essential part of airport security, playing a key role in stopping illegal drug trafficking. Airports like Minneapolis and Las Vegas have led the way with their highly trained K9 units — and a 2022 video from Las Vegas showcased just how effective these canine teams can be.

In the footage, one dog navigates a crowded terminal with focus and precision, ignoring distractions as it searches for narcotics. These dogs are trained to detect a range of substances, from marijuana and cocaine to heroin and meth, even in tiny amounts.

What makes these units so effective isn’t just the dogs’ keen senses, but the strong bond they share with their human handlers. Their partnership, built on trust and rigorous training, is crucial to their success.

The Las Vegas video not only highlights a dog’s impressive detection skills, but also reflects the broader importance of K9 teams in airport safety. Their presence deters smugglers and offers reassurance to travelers — a quiet but powerful line of defense at the nation’s busiest terminals.