roberts electronics in april after tweeting about the possibility of activating the oxygen masks on a united flight from denver to chicago. boeing says its aircrafts, in-flight entertainment systems on commercial airplanes, are isolated from flight and navigation systems. but would not explain how the systems are separated. >> if it's only separated by a firewall or piece of software but they're inside the same hardware that's a much more serious risk. >> reporter: a government report in april warned of potential cyber security risks for airlines saying technologies including passenger wi-fi systems, create "the possibility that unauthorized individuals might access and compromise aircraft avionic systems." we reached out to united. it says it is confident that these claims are unfounded and we also reached out to roberts and have not heard back but in a tweet he says he has been advised against saying anything more given the current situation, but that his only interest over the last five