. >> reporter: san francisco supervisor julie christensen says the city is increasing efforts to address the problem adding police patrols and programs to help the homeless. >> i think people should know that we have really stepped up our efforts at city hall to try to address this issue in a positive way. at the same time, i am hearing from constituents who want to make sure that our neighborhoods are safe. >> reporter: now, as for an increased police presence here at pier 14 today, well, we're not really seeing it. live in san francisco, cate caugiran, kpix 5. >> the west contra costa unified school district is under fire this week. only on "5" we talked to a whistle-blower who was an accountant for the district and he says more than $1 billion was mismanaged money spent where it didn't need to be robbing the taxpayers and the children. that whistle-blower says the district overpaid to renovate and rebuild several schools. whistle-blower. as kpix 5's da lin shows us, some of these fancy bells and whistles have some serious safety concerns. >> reporter: ohlone elementary school in hercu