Season 18:E8

Why do three main characters who are:

​Dr. Owen Hunt: Head of Trauma Surgery

(Attending Trauma Surgeon)

​Dr. Teddy Altman

Attending Cardiothoracic Surgeon

​Dr. Cormac Hayes: Head of Pediatric Surgery

(Attending Pediatric Surgeon)

Leave the hospital to pick up a heart for a transplant.

What if there's an emergency at the hospital that they're needed for.