Employees at Force Protection Inc., work to produce Cougars in Ladson, S.C. in this May 9, 2006 file photo. The military is buying thousands of these mine-resistant, ambush-protected vehicles known as "MRAPs" to guard troops in Iraq and Afghanistan from deadly roadside bombs. These hulking machines _ at about $450,000 a pop _ rely on their heft and creative design to bull their way through blasts that can cripple Humvees. (AP Photo/Mary Ann Chastain, File)

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