floodwaters, giving up his own seat on the boat to rescue people, like we said, ordinary folks doin amazing things. chris lawrence, thank you. apple may be getting closer to knowing your every turn, your every turn literally, the tech giant bought out a startup called wi-fi slim specializes in indoor gps. indoor meaning it is a mapping system that can figure out exactly where you are inside a building right down to what floor you are on, what aisle you're in in a grocery store. samuel berg joins me now. i don't know how i feel about this. explain this to me. >> apple uses this technology from this company to help map -- that would be something brand-new for them but nothing new for google maps. let me show you an example of an app that google launched last year. inside shopping malls they have been mapping, if you're trying to find an atm. this technology from this new