PHOENIX (AP) - Sixty thousand people are expected to attend the National Rifle Association's annual convention that starts Friday in Phoenix. Organizers say the 3-day event is a celebration of America's Second Amendment rights and a gathering point for opponents of efforts to limit those rights. Friday's speakers include Sen. John McCain, Republican National Committee Chairman Michael Steele, former Massachusetts Gov. Mitt Romney, Mississippi Gov. Haley Barbour and Arizona Gov. Jan Brewer.