Tonya Brewer squared her body, kept her eyes locked on her next target and slowed her galloping palomino, Jolene, with a “whoa” around the first barrel. Fellow competitors whooped and hollered from behind the rusting blue gate surrounding the South Anchorage rodeo arena as Brewer maneuvered Jolene around two more barrels in the shape of a clover, completing the pattern in 15.6 seconds – the winning time for the first race.