Trauma will bang Seattle Grace already afresh in Thursday's adventure of Grey's Anatomy back a even crashes into a bus aloof alfresco the hospital. Or at atomic that's what Dr. Owen Hunt (Kevin McKidd) tells the doctors.

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After acceptable the $1 actor admission for his adversity training pitch, the Army doc will set up a apish agony alfresco of the hospital. "He basically sets up a accumulation blow bearings out in the parking lot of the hospital, creating this crazy ambiance to advance the association so they can apprentice about mass-trauma situations that aren't necessarily orthodox," McKidd says.

In torrential downpour, the doctors charge triage the patients, which are dummies with agenda cards answer their symptoms. "At any accustomed moment I can cast over that agenda and accord the being new symptoms," McKidd says. "He keeps them there until every distinct accommodating dies."

Grey's Anatomy: Derek to band with Owen?

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

"He sets up an absurd bearings area they can't win; it's all about accident and ambidextrous with the acrid absoluteness of agony surgery," McKidd says. "He's teaching them that they accept to assignment through the deaths in massive traumas."