CREATE TABLE table_1892 ("No. in series" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

Name the air date that chris long directed
SELECT "Original air date" FROM table_1892 WHERE "Directed by" = 'Chris Long'
SELECT "Original air date" FROM "table_1892" WHERE "Directed by" = 'Chris Long'