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_1015521_2 (us_air_force_equivalent VARCHAR, commonwealth_equivalent VARCHAR)
### Question:
If you are a pilot officer in the commonwealth then what will you called as in the US air force?
### Answer:
SELECT us_air_force_equivalent FROM table_1015521_2 WHERE commonwealth_equivalent = "Pilot Officer"