In this extended promo trailer, Kara makes a major life decision not just for herself, but the entire planet. Meanwhile, J'onn finds out that special DEO-caliber guns have hit the streets of National City.

Director: Dermott Downs

Writers: Jerry Siegel (based on characters created by), Joe Shuster (based on characters created by)

Stars: Melissa Benoist, Mehcad Brooks, Chyler Leigh