CREATE TABLE table_73787 ("Series #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Viewers  ( in millions ) " TEXT)

What is the original air date of 'Powerless'?
SELECT "Original air date" FROM table_73787 WHERE "Title" = 'Powerless'
SELECT "Original air date" FROM "table_73787" WHERE "Title" = 'Powerless'