this is used on the north atlantic. the reason the adsb, it was functional, i agree with jeff on that. but the reason it did not perform was because you have to have a participating air traffic control in the entire system. so i don't believe that they participated. as far as turning it off it is not the transponder that turns it off. what turns it off is a function on the triple 7 anyhow of the flight management computer, then it can be turned off. but next gen is going to the united states because we're participating in next gen. with these other countries, europe is participating. other countries are, and i'm not familiar with the far east, but that is why this system failed with malaysian 370. >> david souci? >> yeah, i actually was on the team that wrote the omb 300, the funding document. if you want to know more about next gen, you need to talk to me, not understand who doesn't understand what adsb, adsb 1