Grey's Anatomy - Patrick Dempsey Grey's Anatomy - Patrick Dempsey

On the May 20 season finale of Grey's Anatomy, a roving gunman with a grudge went on a killing spree at Seattle Grace Mercy West. But would anyone off the street really be able to have the run of the joint? According to Dr. Glenn P. Kelley, a cardiologist at East Jefferson General Hospital in Metairie, La., there's good news and bad: "Patient room doors do not lock," says Kelly, "so that doctors can get to them if we need to." However, "supply rooms, pharmacy rooms, and rooms with sensitive/expensive equipment and call rooms all definitely do lock." Oh, and there are entire wards—maternity and psychiatry, for example—that are kept on 24/7 lockdown to prevent the wrong folks from getting in or out. Translation: A stint in the nuthouse has never looked so good.

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