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_name_69 ( tied VARCHAR, mountain_west VARCHAR, years VARCHAR )

### Question ###
How many games tied for the air force with over 57 years participating?

### Accurate SQL ###

SELECT COUNT(tied) FROM table_name_69 WHERE mountain_west = "air force" AND years > 57