>> maracas. sombreros on. no tequila, sorry. >> no serenade today? nothing? >> nothing. we will have fun. we'll get to the serious stuff. >> more serious news. we begin this half-hour with infernos across the american west. threatening thousands of homes. >> more than 50 wildfires this morning. the most serious one, a fire outside yosemite national park that has more than tripled in size. abc's neal karlinsky is on the front lines. >> reporter: at yosemite rose bed and breakfast built for the thousands who flock to yosemite's untouched beauty each year they're making their last stand. the fire is coming over the hill straight at them. the owner in his bulldozer to help out is making plans with the fire team. >> you give me the signal. i can make laps around the house without a problem. >> okay. we have two at your house. >> just down the road, another fire team at this house, staring down an intense aerial fire fight to stop the flames before they burn through his property. >> are you sticking here? >> oh, yeah.