it broke out at 2:30 this afternoon. here you can see news chopper 2 on the way to the scene. a teen on a bicycle opened fire of a driver, the shots hit the fire who was walking with his mother and other children. the 10-year-old is in critical condition but expected to survive. fires burning in santa clara county today in an effort to prevent wildfires this summer. ktvu's robert handa is live with the operation and why it is so risky. robert? >> reporter: with all this dry vegetation you can see why today cal fire set off the first in a series of burns in the south bay, soon hundreds of acres will bioteched to head off -- be touched to head off -- torched to head off fires. >> reporter: they swept in

today setting small fires to fight bigger fires later. >> what we had to do is burn 6 achers to establish our fire line -- acres to establish the fire line so when we do this burn we don't have to worry about a control line. hard for us to control, hold the fire. the fire season in california is not as severe as california but -- >> we have opportunities in california, the same conditions they are having in colorado. >> reporter: as effective as the burn can be as a safety precaution, setting fires like this in these conditions is not as simple or safe as it appears. >> reporter: a prescribed burn that got out of control caused a fire a few years ago and led to procedures. >> we have people watching the

wind shifts. the fire can bump the control line so we have to be ahead of it. >> reporter: today's burn went well. as you heard, they plan a 300- acre burn soon but first they will burn 100 acres on monday. live, robert handa, ktvu channel 2 news. there is word of an arrest after shots were fired during a marijuana raid. it happened this afternoon. officials say wardens and the sheriff's deputies were fired on during a marijuana farm raid. authorities returned fire hitting a suspect who then escaped. later officials say a wounded man called 911 and transported to a hospital. that man is now under arrest on growing marijuana. investigators announced today the fire in oakland that

shut down bart was deliberately set, hour the bureau of alcohol, tobacco, firearms and explosives did not release details on how they came to their conclogs. it broke out -- to their conclusion, it broke out here a bart station and damaged equipment, which shut down bart. two families are devastated tonight after a four-alarm fire ripped through their homes. it started at 2:30 p.m. this afternoon on limestone drive. 40 firefighters battled the flames. one family lost everything. i like that. don't know. >> reporter: what happened? >> no one knows. >> reporter: everybody okay? >> yeah. >> reporter: so far no official word on what started the fire. it was anticipated for weeks, today the supreme court

upheld the affordable care act. we have live team coverage on this ruling. ktvu's ken pritchett is live in oakland with what it means for uninsured californians. ken? >> reporter: to be sure this ruling will have an impact on all of us, the biggest change is for those who do not qualify for assistance. millions will be insured who currently are not. >> reporter: how will the affordable care act effect people? >> same for me. >> reporter: his job doesn't provide insurance will be covered. >> i am not trying to -- couldn't afford to go to the doctor. >> uninsured californians will almost all have some option for coverage. >> reporter: she says the affordable care act will impact people differently.

today medi-cal covers people who are poor. >> in 2014 if you are poor enough you will be eligible. >> reporter: the vast majority will get insurance through work. it is those that are uninsured and not poor that will have to take action. >> the team in between will face this requirement that they get coverage or face a penality. >> reporter: 7 million uninsured californians right now, even with this act, when it goes into effect, 2-3 million people living in the state will not be covered, remain uninsured, most of pose people are undocumented. ken -- most of those people are undocumented, ken pritchett, ktvu channel 2 news. businesses now have to find ways to provide health insurance. ktvu's tom vacar is in san

francisco with the impact it will have on small employers. tom? >> reporter: what employers are faced with will have everything to do with how many employees they have. >> reporter: healthcare impacts. >> i cannot tell you how many tragedies i have seen related to being uninsured. and i think that having a nation with health insurance will translate into better healthcare for all. >> reporter: a million people who run their own businesses will have access to competitively priced insurance. >> it says the minute i hire more than 50 i have a new obligation. >> reporter: 50-200 employees are obligated to pride

insurance -- provide insurance or pay a penality. >> in fairness, 95% of businesses over 200 employees are providing health insurance. >> this will give them an avenue they can go to that can bargain in the best interest of the consumer and lower the cost. >> reporter: the discounts will take a while. >> it will take time for the effects to work their way to the system. >> the key of whether this will be judged successfully, can they put in cost controls. >> reporter: one major additional delay, actually putting together all the rules to make the law work. reporting live, consumer editor tom vacar ktvu channel 2 news.

a physician who helped write the affordable care act says it was an important step today and a great success. he was a health policy fellow in 2009 and 2010. and helped develop the bill with an eye towards helping patients. >> it is always about what it means for the system. i practice at san francisco general, this is a game changer. >> he says he will work to implement the law in the coming years. 21 house republicans went on the attack against the u.s. supreme court and the healthcare reform plan. >> a tremendous attack upon the constitutional liberties that are supposed to be protected. >> the gop says the healthcare

system still needs reform and more americans need access but they are determined to get the affordable care act repealed. again, the u.s. supreme court upheld the mandate that every american buy health insurance. the justices used the power of congress to tax to affirm the mandate because it requires people to pay a penality if they don't get insurance. >> it came down after 7:00 a.m. this among -- this morning, and you remember you can watch ktvu channel 2 news anywhere, just download the app on www.ktvu.com. police arrested ricardo sandoval yesterday after a robbery at the credit union. the suspect forced a 19-year- old woman to drive him away.

she was not hurt. ricardo sandoval faces robbery, carjacking and kidnapping and false imprisonment charges. a driver killed last night in san jose was traveling as fast as 120 miles per hour before he lost control. happened 11:20 last night. the chp says the driver was a 24-year-old man but is not releasing his name at this point. the man charged in the fatal decision last month, he plead not guilty to two counts of vehiclal manslaughter. this is new video today of the memorial at the accident site. two were killed in the collision. a sales tax hike is set to take effect in santa clara county in a few days.

sunday, july 1 the rate will increase to 8.3%, it will be higher in campbell, that city has a special district rate so the sales tax increase towsacks .63%. >> reporter: -- increase to 8.63%. tunes looking to betterint -- itunes is looking to better integrate. the changes are expected to be unveiled by the end of the year. we are live inside the ethic's commission hearing for suspended san francisco sheriff ross mirkarimi. the key testimony everyone is waiting to hear. >> back here in 10 minutes, there is the fog, headed your way, temperatures are trending down, how cool they will get for your friday.

caltrans is blaming technical difficults for a traffic problem at the caldecott tunnel. they were unable to switch the direction from west to east. crews started to make the change but it didn't happen today till 1:30 p.m. the news room has been getting calls complaining about the

traffic through the tunnel for the past several weeks. governor jerry brown signed the budget but not before making vetoes. cut $200 million from the budget. come effect calgrants, and food stamps and child nutrition, mental health programs. >> the state is on a path towards fiscal stability. the budget does reflect the fact the november ballot initiative will be approved. >> it if voters don't approve, cuts will go into effect january 1. in three day as new law will require companies to

provide maternity care. hmo and employer plans were already required to offer the care. the bill was supported bikieser and blue shield of california. we have been monitoring the ethic's commission hearing live waiting for suspended san francisco sheriff ross mirkarimi to start his testimony. he is in the hearing room right now. ktvu's david stevenson is there with the latest on what is going on. david? the hearing has been going on for just under 45 minutes and already there have been big developments. let's go inside for a live look. the hearing began with the attorney for immigration law -- for ellana lopez to make her available to testify via skype. they agreed to allow her to use skype with conditions attached. the commission took up video shot by ellana lopez's neighbor that shows her crying as she displays a bruise given to her

by ross mirkarimi. the commission moved to admit that video as evidence. ross mirkarimi pleaded guilty to false imprisonment, the mayor then charged him will miscontact. here is what he said. >> what can you say? we are just looking to dispel the untruths and turn fiction into facts and making sure that -- >> reporter: ross mirkarimi greeted by supporters. we expect him to take the stand and ask for his job back. we will be on the story all night and ktvu's eric rasmussen will have a wrap up coming up tonight on the 10:00 news.

reporting live in san francisco, david stevenson, ktvu channel 2 news. >> and www.ktvu.com has complete coverage of the ross mirkarimi hearing and following us on twitter for updates. >> reporter: the school district this week voted to approve larges class sizes for certain grades. they raised the sized from 20- 28 students per teacher. officials say $2.3 million in tax money was used to avoid raising sizes to 31 students and they saved two schools formarily on the chopping block. cooler out there today. more fog that coast. that fog will be a big player the next couple of days. you can see the cool bite of air, see it lingering. those are temperatures in the

70s and 60s. down 4-5 degrees from yesterday. these were the highs from today and these are the highs for tomorrow. we will cool off again, right? and more fog, cooler day time highs. you got the marine layer right now. that is why you don't see fog in livermore or richmond yet. here is the golden gate bridge, the fog gets fat, lifted up and over the coastal hills, and all the cool air pushes inland. good news for firefighters. great air quality but trends temperatures down. cooler day time highs. this high-pressure system weakened by this. that is rain. it is a frontal system and it is late in the season to see that. that is what is the mechanism for the fog getting fat, the

cooler for tomorrow. 3-6 degrees cooler for your friday. and we will warm towards sunday. a mild pattern and it persists for the next 48 hours. tomorrow morning fog forecast, you see it, over towards petaluma. fog in the tri-valley area. and it pushes inland. that is the forecast tomorrow. cooler as today was cooler, tomorrow will be cooler. not cold. don't change your plans. throw a jacket on. but in the afternoon, temperatures like these, pleasant. and by the way with good air quality and fire danger that is diminished, fire danger time of year but this pattern is really helpful for the firefighters. there is the five-day forecast with your bay area weekend in view, towards the end of the

weekend warms up. mild pattern. mild, and fog at the coast. coming up on bay area news at 7:00 on tv 36 today's supreme court decision sparks a response in congress. the growing criticism that is sparking action by lawmakers and also -- >> american pride and rocket man july fourth sales are on. why some communities are concerned. >> join us for these stories and more on bay area news at 7:00 on tv 36. a bay area coach is at the center of an extortion clot the evidence the woman is accused of using to blackmail golden state warriors coach mark jackson.

the golden state warriors say coach mark jackson was targeted in a extortion plot. the warriors say he went to the fbi after he was contacted by a former mistress and ex- stripper. she threatened to expose an affair if jackson didn't pay her hundreds of thousands of dollars. she was arrested along with a co-conspirator. mark joins us now with more news about the warriors. >> you know, it will be ultimately the players on the court that bring better days to the golden state warriors organization and they hope to have added another talented piece tonight. number 7 over all, coming from a great basketball school, harrison barnes out of university of north carolina. known to have a great work

ethic. described by one as having an elite jump shot. for now the golden state warriors are happy and so is the kid. >> i am very excited. i am just truly blessed. i don't have a lot of words other than that. first class organization and i can't wait to play for them. i hope to add to the three point shooting, add diversity. clay and stef can really shoot the balls. >> we are thrilled. he has great value and we are expected. he is just what we need. you will love him. >> other top 5 picks, this never happened before. first three selections are freshman. davis going to new orleans and kidd-gilchrist back to the bobcats and beal out of florida with the wizards. he is only 19.

we got to mention, lillered out of oakland going to the trail blazers. rafael nadal is out of wimbledon and italy is moving on to the finals. >> all right. thank you. we are live inside the ethic's commission hearing in san francisco going on right now. this may be suspended san francisco sheriff ross mirkarimi's last chance to try and save his job and tonight at 10:00, complete coverage of the testimony. >> thank you for trusting ktvu channel 2 news.