In the conclusion of a two-part story, the Code Black emergency remains in effect as Blake (Isaiah Washington) tries to remove a live bomb imbedded in the chest of a WW2 re-enactor--with a very nervous Meredith (Ellen Pompeo) holding the explosive steady lest it blow the hospital to smithereens. The strain proves too much for Dr. Webber, who suffers what seems to be a heart attack. Meanwhile, Bailey (Chandra Wilson) has gone into labor, but refuses to deliver her baby without her husband present--placing Derek (Patrick Dempsey), presently operating on the husband for injuries sustained in a car accident, in quite a quandary. And with the whole world crumbling around them, Izzie (Katherine Heigl) and Alex (Justin Chambers) pick this time to express their love...in a linen closet. ~ Hal Erickson, Rovi