mr. connolly.because the technology exists so that a single operator could allow, could oversee the operation of multiple uavs. just to restrict one drone to one operator is just overly restricted and certainly unnecessary from tech log call -- >> mr. whitaker that sounds reasonable on amazon's part. i look at faa controllers. we don't say that with faa controller you follow one plane coming in or going out, that's it. because otherwise we don't believe you have got control and it taxes the civil. maybe that is not a perfect analogy but technology kind of does allow to us do more than one thing at a time. what is wrong with amazon's point of view? >> i think we will get there in certain circumstances. right now you have two pilots and in each airplane and you have controllers and in a new system if it's a large aircraft, certainly there will be one per aircraft but if it is quite small, there could be scenarios where it's multiple units. but, the technology has to be proven. standards have to be de