Kevin mcKidd Kevin mcKidd

Trauma will strike Seattle Grace once again in Thursday's episode of Grey's Anatomy when a plane crashes into a bus just outside the hospital. Or at least that's what Dr. Owen Hunt (Kevin McKidd) tells the doctors.

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After winning the $1 million grant for his disaster training pitch, the Army doc will set up a mock trauma outside of the hospital. "He basically sets up a mass casualty situation out in the parking lot of the hospital, creating this crazy environment to push the residents so they can learn about mass-trauma situations that aren't necessarily orthodox," McKidd says.

In torrential downpour, the doctors must triage the patients, which are dummies with note cards explaining their symptoms. "At any given moment I can flip over that card and give the person new symptoms," McKidd says. "He keeps them there until every single patient dies."

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Owen has pulled big stunts in the past. (Remember the skills lab he conducted with pigs?) This time around, the lesson is about accepting that not every tragedy has a happy ending.

"He sets up an impossible situation where they can't win; it's all about losing and dealing with the harsh reality of trauma surgery," McKidd says. "He's teaching them that they have to work through the deaths in massive traumas."

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McKidd also teases that one doctor in particular will stand out by using unconventional methods, showing they have a natural gift for Trauma like the late George O'Malley (T.R. Knight).

Which doc do you think will step up to the plate?

Grey's Anatomy airs Thursday at 9/8c on ABC.