Listening to the rapid, incomprehensible buzz of Spanish that permeated the hot, stuffy confines of the Tres Estrellas bus, Elder Terry Richards gulped and stared straight ahead, straining to visualize his first city. All he knew of Guaymas, Sonora, Mexico, was that the bus depot was across the street from the city jail; therefore, when the bus entered a strange city and made a routine stop in front of a large baleful structure resembling a medieval stone fortress, he knew he had arrived.