Mr. Gibson was arrested on drug charges after a traffic stop, during which a police dog was used to sniff for drugs. Officers found a trace amount of cocaine in the glove compartment. Mr. Gibson's lawyer argued that the state had not proved the dog's reliability and that the evidence should not be allowed. The trial court denied that motion and Mr. Gibson pleaded no contest. On appeal, the Second District Court of Appeal overturned that decision, finding that the dog's training and certification did not, on its own, give an officer probable cause to conduct a search. The state appeals that decision.