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_70418 ( "Name" text, "Born" text, "Age at first step" text, "Mission" text, "Lunar EVA dates" text, "Service" text )

### Question ###
The astronaut who was 37y 8m 4d when making a first step on the moon was in which service?

### Accurate SQL ###

SELECT "Service" FROM table_70418 WHERE "Age at first step" = '37y 8m 4d'