Hudson, trained to sniff illegal food products, alerts his handler to a possible problem in a passenger's bag at Washington Dulles International Airport. Agriculture specialists are on the lookout for plant and food items that can carry bacteria, pests and other potentially dangerous material into the country. (Barbara L. Salisbury/The Washington Times)

Hudson, trained to sniff illegal food products, alerts his handler to a possible problem in a passenger's bag at Washington Dulles International Airport. Agriculture specialists are on the lookout for plant and food items that can carry bacteria, pests and other potentially dangerous material into the country. (Barbara L. Salisbury/The Washington Times)