dr. hensman. >> thanks for the opportunity to be here today. it's sort of hard to follow the demo but as you can see uavs are one of the most exciting areas in particularly aeronautics today. the same technologies that we used to enable these cell phones, the miniaturization of processing coupled with algorithms coupled with high power, you can see the stability of high performance in very small packages. today back in my office at mit i have two teams of students building new uav concepts so it's a real exciting area. the thing to remember about uav interegg iegsation intereggation that there's a huge spectrum of sizes ranging from a few grams up to a thousands of pounds. we have the small uas operating at low altitudes within line of sight of the operator. we actually know how to do that today. we've been doing it for years. we really need to get that going and get that enables. that's what you've heard from some of this. there's other categories. you have high altitude uavs. sort of the ones the military would want to operate. we sort of kno