NEW : Massachusetts mayor says city will be ready for the National Grid utility company 's game . Massachusetts lifts state of emergency . 1,500 households remain without power in Atlanta . Northeast cancels 1,500 flights in an effort to minimize delays .
NEW : Atlanta mayor says city will be ready for NFL game . Massachusetts lifts state of emergency . 1,500 households remain without power in Massachusetts . Delta cancels 200 flights in an effort to minimize delays .