uphill, upwind. you believe you have chemicals on your skin or clothing, obviously time is critical. remove everything from your body, wash your hands, flush your body with water. your safety is no. 1. direct contact with treating victims can expose you to contaminants. these people coming out of the bart might have been exposed to something, do you want to go and start touching them? do you want to let them leave? you are trying to contain them because where are they going to go? probably go to the hospital and then spread it. so call 911, warn others, direct them to wait for responders. hey, stop. help is forthcoming. if you are calling 911, just basic information you should know. is it a fire, is this a crime scene. evacuation is not always the best way. sometimes you want to stay inside your house. chemicals dropped over, this vapor cloud is coming, coming towards -- hit the golden gate bridge, one direction, now coming toward the marina. pick up your radio, tell the marina residents shelter in p

. >> dangerous maneuver is to go from an upwind point of sail to down wind. that is what the guys were doing. >> now, ora cell is without the biggest and fastest boat. the team needs two boats to race for practice. because there is a defending champions they don't have competition between now and to 13. >> hopefully we can get things fixed up. and there is a second boat coming next spring. i think at the end of the day we'll be in good shape. >> once getting it out of the water crews can fully assess the damage. the skipper says just eye balling the boat looks to be in good shape. >> still ahead on abc 7 news at 4:00 fallout from the lance armstrong doping scandal. two positions he's now lost. >> also coming up has ebay stopped bleeding? good and bad news for the web site. >> michael finney is taking your questions on twitter and facebook and will answer them here live. you can contact michael on facebook.com/michael finney abc 7 and on twitter at mfinney. >> at 4:10 there is a first check of trafgs. if you're heading southbound for peninsula, you're feeling

. >> jim stays upwind of the inferno, unsure what the train cars are carrying. >> you always want tothe wind is. you want to be real cautious because obviously if it's a toxic chemical, you don't want to end up downwind of a train derailment and get any of the smoke or fumes that come off of it. >> on the ground, j.t. langston from the luther volunteer fire department is one of the first on the scene. >> it was going pretty good. the fire was going pretty hot and heavy there when we got there. >> the fire department doesn't know what the train cars are carrying, either. >> i didn't know what was in them or how bad it was at that point in time. i just knew that we needed to get on it pretty quick or we were going to have trouble. >> luther fire chief brian martin is faced with the most dangerous situation of his career. his small department isn't trained to deal with hazardous material. >> that requires specialty training. a lot of that training isn't available sometimes. and my biggest issue with everything was always keeping my guys safe. we wanted to know what we had, what we were

so they have to go downwind, with the wind basically and then turn around and come back and go upwind. they do it twice. and then they finish right in front of the marina green. it's a great venue. >> reporter: congratulations on winning that second race from oracle team usa. chris bedford, the meteorologist. let's get you to the weather maps. the weather forecast, all important. i know a lot of the sailors will probably watch the forecast going, please, heat wave, leave. it was doing nothing to create wind across the bay. right now, chilly, 50s and 60s across the weather board. and what we'll find here as we head throughout the weekend is autumn air continuing to arrive with plenty of jacket weather in the forecast. if you're headed here for any of the large events, take that jacket again. here we go. fleet week, america's cup, san francisco giants, strictly hardly bluegrass festival. also 49ers, temperatures starting off in the 50s with the fog. by the noon hour, clouds will linger. low to mid 60s, at least over the next three days. we'll look at numbers topping out for the most par