Grey's Anatomy: Season 7, Episode 7

7 - 7: That's Me Trying

The residents are pushed to their limits when Owen puts them through a rigorous trauma certification drill. Cristina is also put to the test when she is left alone to monitor a critically ill lung transplant patient, leading to a fight with Meredith and a shocking decision about her future. Meanwhile, Bailey struggles to find answers about the mysterious death of a patient, and there are some problems with Callie and Arizona's plans for Africa.