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_221315_3 (max_altitude__miles_ VARCHAR, pilot VARCHAR)

### Question ###
What was the maximum altitude for Neil Armstrong?

### Accurate SQL ###

SELECT max_altitude__miles_ FROM table_221315_3 WHERE pilot = "Neil Armstrong"