List all the cities where Zachery Hicks transported goods.
city refers to city_name
SELECT DISTINCT T3.city_name FROM shipment AS T1 INNER JOIN driver AS T2 ON T1.driver_id = T2.driver_id INNER JOIN city AS T3 ON T1.city_id = T3.city_id WHERE T2.first_name = 'Zachery' AND T2.last_name = 'Hicks'