The infamous tractor square dancers, swing their Allis-Chalmers mounts during a preview performance at the Maria Stein Country Fest on Thursday. This year's theme is "Duck Dynasty." The 26th annual festival gets under way at 5 p.m. today on the Shrine of the Holy Relics grounds off St. Johns Road. Festivities continue Saturday and Sunday with food, fun and free entertainment, including the tractor square dancers, the aerial and animal show, a variety of bands, volleyball and cornhole tournaments, sculpting and rides for all ages.