 My name is Kirk Harwood. I was the air vehicle lead for the Global Hawk program during the Block 20 envelope expansion. It had very unique aspects to it because obviously the Global Hawk is an automated air vehicle. So we would plan for missions that were what we built up from four hours to I think it ended up being a 33 hour mission at the end. So you had to plan for not only being in the control room for a long period of the day. I remember maybe we settled around six hours or something like that and then shifted people in and out. So you had to have good communication between one team to the next team so that you could get through the whole flight as they got longer and longer. From my time in the Global Hawk so I joined the Global Hawk community in 2015 where I started out as a pilot with them and then proceeded through as a pilot, became an electronic combat officer as well to help us figure out how to be more survivable in SATCOM either denied or low availability areas as well and then continued on to operational tests for the RQ4. The operational perspectives and also the limitations that the platform had because it was thrust into a national meet, it really provided me a perspective as a test pilot school coming into the portfolio in a second about how important it is to bring in your operational context, bring in the experience that you have flying the line, performing missions with the platform and ensuring that the next level systems or the next level platforms or whatever else comes down the line is to the best of your ability ready to do that next mission or that next flight. Also anticipating that we're going to be asking those future systems to do things that they were not originally intended to do as well, which is an interesting line to balance. Legacy of the RQ4 is bringing an autonomy into aviation, into particularly military aviation, bringing in early lessons learned on how in the world do I ask and we'll use whatever words that make sense at the time, maybe a send by autonomous, whatever we might want to call the RQ4 definitions are for another conversation. But a platform that has arguably a high degree of autonomy because I don't have it necessarily a throttle instinct to interact with that platform and experimenting and experiencing out in the real world what is required, what is asked for various levels of autonomous platforms that helped inform I believe those lessons those experience are helping inform future autonomous platforms that are also coming down the line as well. Global Hawk may be going away, it's done its duty I guess, but I think there's other things out there or there will be other things out there in the same vein. They won't be remotely piloted, they'll be autonomous their vehicles, you know we're hearing a lot about that these days. Global Hawk and its predecessors actually in Ryan Aeronautical are really the legacy of what we're doing so all of those older programs and how we've done things in those programs should be very educational for the people coming along doing these newly autonomous air vehicles that we're looking at to go with the next generation of aircraft. Thank you.