long live your buddy. long live your dog. [ tintin ] snowy! purina dog chow. the adventures of tintin, on dvd and blu-ray today. >> teachers unions often face criticism these days for blocking much needed school reform and protecting bad teachers. but one teachers union in montgomery county, maryland, is turning the tide. their member review system and close relationships with school administrators puts students first and make school reform a top priority. joining us right now is the vice president of montgomery county education association, chris lloyd. chris? how did this come to be? unions and districts working together? >> well, we really started