U.N. employee Gerry Lane (Brad Pitt) tries to protect his family and make sense of the chaos around him in the latest TV spot for World War Z. Based on the popular novel by Max Brooks, this thriller is set in a world overrun by the living dead, with the last remains of humanity trying to figure out a way to prevent this worldwide plague from continuing to spread. Take a look at the latest footage from director Marc Forster's adaptation, hitting theaters nationwide June 21.