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_2104176_1 ( air_force_cross VARCHAR, homeland_security_distinguished_service_medal VARCHAR )

### Question ###
What is the air force cross when you recieve the Aerial achievement medal?

### Accurate SQL ###

SELECT air_force_cross FROM table_2104176_1 WHERE homeland_security_distinguished_service_medal = "Aerial Achievement Medal"