Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_20 ( "Equivalent NATO Rank Code" text, "Rank in Spanish" text, "Rank in English" text, "Commonwealth equivalent" text, "US Air Force equivalent" text )

### Question ###
If you are a pilot officer in the commonwealth then what will you called as in the US air force?

### Accurate SQL ###

SELECT "US Air Force equivalent" FROM table_20 WHERE "Commonwealth equivalent" = 'Pilot Officer'