The Baltimore Sun has posted images of Bruce Willis on the set of Live Free or Die Hard now filming in Baltimore.

CLICK HERE to view the five behind the scenes images.

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The film stars Bruce Willis, Justin Long and Maggie Q and will be released on June 29, 2007.

The fourth installment of the franchise finds hero John McClane (Bruce Willis) coming out of retirement to battle an Internet terrorist organization. Aan attack on the country's computer infrastructure begins to cripple the nation. But the man behind the attack never expected an old-fashioned cop to mess up his plans.