The National Rifle Association's annual convention kicked off Friday, with more than 70,000 expected to attend the three-day "Stand and Fight"-themed gathering. During a raucous rally at NRA headquarters, the organization's soon-to-be head touted the importance of their fight. "This is not a battle about gun rights," said James Porter, whose father headed the NRA from 1959 to 1960. "[It's] a culture war." Porter, who says he's determined to strike down anyone trying to "go after our guns," applauded the group's recent victory over President Obama and Congress's gun-control bill. “[You] here in this room are the fighters for freedom. We are the protectors,” he said.