GREY'S ANATOMY - "Life During Wartime" - Dr. Owen Hunt teaches an unusual lesson in trauma medicine to the doctors of Seattle Grace, on "Grey's Anatomy," THURSDAY, OCTOBER 30 (9:00-10:01 p.m., ET) on the ABC Television Network." (ABC/ERIC MCCANDLESS) KATHERINE HEIGL (OBSCURED), SANDRA OH, JUSTIN CHAMBERS (OBSCURED), CHYLER LEIGH, KEVIN MCKIDD