get down to this kind of quality. we call it resolution. this is taken from an airplane flying at a much lower altitude. satellites will play an important part because they can cover a large area. the airplanes need to get that closer visual inspection. >> we've talked about it in the breaking news just now. it was one of australia's airplanes. that shows their capability to see with much better clarity. >> from what i understand, it's more importantly the signals they're detecting on the plane. so there's a visual search, but it's the sensor package on the plane that can look for melts objects. >> so there are limits to satellite technology? >> there are. right now it's a legal limit. it's about 19 inches in resolution. this by comparison is probably