Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_21530474_1 (region_s_ VARCHAR, chassis_code VARCHAR)
### Question:
Name the regions for usf45
### Answer:
SELECT region_s_ FROM table_21530474_1 WHERE chassis_code = "USF45"