|"All the Pretty Horses"|
|Season 3, Episode 18|
|Premiere date:||February 18, 2015|
At an off-site army base, Joel and Zach get in a precarious situation. Also life-changing events rock the doctors at Hope Zion Hospital, while Drs. Reid, Lin and Larouche undergo their Surgical Boards.
- Alex gives birth to her son in an ambulance on the way to Hope Zion with help of Maggie Lin.
- Alex named her son after her late brother Luke.
- Joel (to Charlie): Take care of them. (refer to Alex and her son Luke)