reporter: how does it help in the healing process? well, it s there. it tells you that this is it. this is what you have. this is what happened. like i said for the people who lost lives, those are the people i my heart just bleeds for them. to go in there and see you lost material items, it s one thing, but to know that family members were lost, you can t place any kind of remorse in the scale that they might be feeling right now. reporter: the pellegrinis and other people who live within the blast zones will be allowed one more visit before a hazmat crew cleans up the area. then it will be time to rebuild. it s reality now, you know. reporter: in san bruno, bob redell, nbc bay area news. nearly a week after the explosion and fire that leveled much of the neighborhood, the governor arrived to see the damage firsthand. arnold schwarzenegger returned from a week-long trip to asia and made san bruno his first stop after he got off the plane. some critics have ques