CREATE TABLE table_23393 ("No. in series" TEXT, "No. in season" FLOAT, "Family/families" TEXT, "Location ( s ) " TEXT, "Original air date" TEXT)

Where was the episode with series number US9 filmed?
SELECT "Location(s)" FROM table_23393 WHERE "No. in series" = 'US9'
SELECT "Location(s)" FROM "table_23393" WHERE "No. in series" = 'US9'