<Table> <Tr> <Th_colspan="2"> "Invasion" </Th> </Tr> <Tr> <Td_colspan="2"> Grey's Anatomy episode </Td> </Tr> <Tr> <Td_colspan="2"> Izzie Stevens trying to fight Adamson, as the latter wants to take O'Malley's old locker . </Td> </Tr> <Tr> <Th> Episode no . </Th> <Td> Season 6 Episode 5 </Td> </Tr> <Tr> <Th> Directed by </Th> <Td> Tony Phelan </Td> </Tr> <Tr> <Th> Written by </Th> <Td> Mark Wilding </Td> </Tr> <Tr> <Th> Featured music </Th> <Td> "Clap" "I Want You Now" "Your Ghost" </Td> </Tr> <Tr> <Th> Original air date </Th> <Td> October 15, 2009 (2009 - 10 - 15) </Td> </Tr> <Tr> <Th> Running time </Th> <Td> 43 minutes </Td> </Tr> <Tr> <Th_colspan="2"> Guest appearance (s) </Th> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> Jesse Williams as Dr. Jackson Avery </Li> <Li> Nora Zehetner as Dr. Reed Adamson </Li> <Li> Robert Baker as Dr. Charles Percy </Li> <Li> Héctor Elizondo as Carlos Torres </Li> <Li> Sarah Drew as Dr. April Kepner </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Episode chronology </Th> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> ← Previous "Tainted Obligation" </Td> <Td> Next → "I Saw What I Saw" </Td> </Tr> </Table> </Td> </Tr> <Tr> <Td_colspan="2"> Grey's Anatomy (season 6) List of Grey's Anatomy episodes </Td> </Tr> </Table> <Tr> <Th_colspan="2"> "Invasion" </Th> </Tr> <Tr> <Td_colspan="2"> Grey's Anatomy episode </Td> </Tr> <Tr> <Td_colspan="2"> Izzie Stevens trying to fight Adamson, as the latter wants to take O'Malley's old locker . </Td> </Tr>

Who gets fired in the merger grey's anatomy