the sfmta board will make the final approval based on today's hearing. >>> remember this? this is interstate 280 in san francisco over the 4th of july weekend during majorette tro fit construction. more construction closures are coming over labor day weekend. northbound interstate 280 will be closed from highway 101 to downtown san francisco. the closure begins next thursday afternoon at 2:00 and will continue until 5:00 tuesday morning, september 2. >>> more developments in the aftermath of that brutal killing of james foley. there are now growing concerns about the threat of isis, the terror group that's claiming responsibility. cbs reporter craig boswell has more on the plans by the obama administration. >> reporter: top u.s. officials say the islamic militants isis poses a terror threat unlike anything they have seen. >> they are an imminent threat to all our interests whether in iraq or anywhere else. >> reporter: armed with plenty of money and a brutal ideology, the group now controls territory in syria and iraq. in mosul, the militants stoned a man to death for adul