The astronaut who was 37y 8m 4d when making a first step on the moon was in which service?
CREATE TABLE "apollo_astronauts_who_walked_on_the_moon" (
  "name" text,
  "born" text,
  "age_at_first_step" text,
  "mission" text,
  "lunar_eva_dates" text,
  "service" text
);
SELECT "service" FROM "apollo_astronauts_who_walked_on_the_moon" WHERE "age_at_first_step"='37y 8m 4d';