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_28511558_2 (original_air_date__us_ VARCHAR, directed_by VARCHAR, written_by VARCHAR)

### Question ###
What date did the episode written by Mitch Watson and directed by Curt Geda originally air in the U.S.?

### Accurate SQL ###

SELECT original_air_date__us_ FROM table_28511558_2 WHERE directed_by = "Curt Geda" AND written_by = "Mitch Watson"