Trucks that could be hauling livestock along the Kansas and Oklahoma border were detained and their drivers questioned Thursday, during a drill aimed at protecting the nation's food supply from foot-and-mouth disease.
 
State and local authorities set up roadblocks and pulled livestock vehicles over near Sitka, Kan., and Turpin, Okla., to ask questions about their loads and destination. It was part of what officials said was the first two-state exercise to halt the movement of livestock should the disease break out.