Both AT&T and Verizon have plans to roll out a new 5G service near key airports.However, the nation's largest airlines say the service would interfere with aircraft technology and cause massive flight disruptions.On Tuesday, AT&T made the decision to delay turning on new cell towers around runways to some airports but didn't say how many or for how long. Verizon shared a similar plan but blamed airlines and the FAA saying they "have not been able to sully resolve navigating 5G around airports," although it is working in more than 40 countries. United States Secretary of Transportation Pete Buttigieg told Pittsburgh's Action News 4 they need to rule out any possibility of harmful interference. "The focus right now is to minimize any delays or disruptions that are associated with those restrictions to keep airplanes safe. And at the same time, support the deployment of this technology. And what that means in the short term is asking the wireless carriers to hold off on activating that piece of their network that involves antennas that are very close to runways, so that we can make sure that all the safety issues are squared away," Buttigieg said.Airlines want the new service to be banned within two miles of airport runways.