tracking. what's interesting about this is it has, like, a two-way communication. so an airplane can say i'm here and a nearby airplane can say, okay, well, i'm here and it is going to give us a lot more control. it's gonna let planes fly closer together no longer flying between way points, actually flying more direct, be better for the environment because they will be able to fly shorter route bus gives pilots and air traffic controllers a lot more information about where airplanes in the sky >> the one if is if it's turned on. >> if it's turned on. >> sounds like mh-370 had this -- >> >> their transponder shut off. interesting to see if this technology, ritter adsb to stay on or if it will have the ability to be shut off. something like this is very critical. >> my vote to keep it on. >> yeah it is shocking that our smartphones, tablets, laptops have gps in them but billion dollar commercial airplanes are flying under the radar.