DOCTOR Major Owen Hunt, that is. Kevin McKidd plays the Army surgeon who is back at Seattle Grace and seen here in a promotional photo from "Life During Wartime," in the fifth season of Grey's Anatomy.

That's what the man in charge does, and Owen Hunt steps up to the plate in this promotional photo from "Life During Wartime," in the fifth season of Grey's Anatomy.

It's a new day at Seattle Grace and a new doctor - Owen Hunt - is already shaking things up.

Dr. Owen Hunt (Kevin McKidd) returns to Seattle Grace in this picture from "There's No 'I' in Team," from Season Five of Grey's Anatomy.

Kevin McKidd guest stars as Dr. Owen Hunt in this photo from the Season 5 premiere of Grey's Anatomy, "Dream a Little Dream of Me."

In this photo from the Season 5 premiere of Grey's Anatomy, "Dream a Little Dream of Me," an intense Dr. Derek Shepherd (Patrick Dempsey) appears to be getting more and more caught up in a really heated discussion with Dr. Owen Hunt (Kevin McKidd).

In this photo from the Season 5 premiere of Grey's Anatomy, "Dream a Little Dream of Me," Dr. Derek Shepherd (Patrick Dempsey) appears to be in a heated debate with Dr. Owen Hunt (Kevin McKidd).