our main concern as public officials here, making sure our citizens are safe. state of emergency in a san francisco suburb this morning. a powerful gas line explosion triggering a deadly destruckive inferno. dozens of homes have been destroyed. heat hot enough to crack car windshields from blocks away, melt their taillights as well and people seen literally running for their lives. thanks so much for joining us on this american morning, on this friday, the 10th of september. special edition of american morning morning. i m john roberts. i m kyra chetry. we ve been on since 5:00 eastern time. meantime a new twist in the koran burning that was planned for tomorrow on 9/11. still wondering this morning will it happen. the pastor behind it said no but seemed to leave a small window open. a live report from john zarrella in gainesville, florida, in a few minutes. we re getting new details