CREATE TABLE table_27485 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "U.S. viewers  ( millions ) " TEXT, "Original U.S. air date" TEXT, "Prod. code" FLOAT)

What was the original U.S. air date of the episode directed by Julian Petrillo?
SELECT "Original U.S. air date" FROM table_27485 WHERE "Directed by" = 'Julian Petrillo'
SELECT "Original U.S. air date" FROM "table_27485" WHERE "Directed by" = 'Julian Petrillo'