U.S. Customs and Border Protection officers work hard to learn and spot innovative methods of drug concealments in luggage and mail. With about a thousand CBP officers at John F. Kennedy International Airport they have to work smart and be strategic in selecting passengers for random searches. Using these tactics, CBP officers narrow down two men arriving from different continents. Both searches are clean for drugs, but their nerves and inconsistent stories keep the officers suspicious. Only an x-ray will determine if these passengers are hiding anything internally or if their just nervous travelers.

Source: National Geographic Channel