mayor ed lee and fire chief joanne hayes-white are here. they will be raising the flag to half-staff and then observe the moment of silence. you can see the screws here. all 4 houses in san francisco are holding ceremonies right now to remember the 343 firefighters who lost their lives on 9/11. it's obviously a very quiet and somber moment. at two moments after 7:00, they will read out loud the names of those firefighters. if would you like to observe the ceremony and honor the fallen of the world trade center, new york city, the pentagon and flight 9 3, the public we're told is welcome at all stations. tara moriarty, ktvu channel 2 news. >> all right. thank you, tara? happening now, president obama has been speaking at the pentagon this morning. and in one hour, congress will gather hob the steps of the capitol in washington, d.c. to observe the 9/11 anniversary and pay a special tribute to the victims. we'll have more on that at 7:15 when we go live to washington, d.c. we'll also hear about several new reports out that raise security ques