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_18424435_3 (directed_by VARCHAR, us_air_date VARCHAR)
### Question:
Who directed the episode aired on February 27, 2009?
### Answer:
SELECT directed_by FROM table_18424435_3 WHERE us_air_date = "February 27, 2009"