schieffer: good evening. scott s off tonight. i m bob schieffer. we are beginning tonight with the fires running wild in the west, because there are so many of them now and they are threatening hundreds of homes. right now, 19,000 firefighters are fighting 50 major fires in ten western states. in idaho alone, they burned more than 450 square miles, and with lightning in the forecast tonight, it could get worse. in california, a wildfire outside yosemite national park tripled in size overnight. it now covers more than 84 square miles. so far, firefighters have contained only 2% of it. teresa garcia is there. reporter: stands of cedar and pine exploded as the flames jumped from treetop to treetop, moving faster than the crew fighting them. u.s. forest service officer lee bentley. we ve got a monster on our hands. this fire is making its own weather. it s going every which direction. this is one of the worst i ve ever been on, and i ve been doing it quite a few years. re