HEBRON, Kentucky (AP) - The main terminal at Cincinnati/Northern Kentucky International Airport was evacuated for three hours on Sunday after a security incident involving a passenger waiting to board an airliner. Airport Police Chief Chuck Melville said the man passed the main checkpoint, but during a random search at the gate, Comair employees found marijuana. "He alleged he had a penknife, but no penknife was found," Melville said. The statement alone prompted the evacuation, Melville said. "He said he had one, so we have to take it as if he had one," he said. The man did not attempt to...