We’re from the FAA and we’re here to blame you for our mistakes. It’s hard to know which is more messed up these days—air transportation, or the Biden Administration. As another case in point, consider the clash between airlines and wireless carriers over 5G. Carriers paid the U.S. government $80 billion for this valuable spectrum, but the Federal Aviation Administration now won’t let them use it. The agency says the signals could potentially interfere with plane altimeters that measure the distance to the ground. The Federal Communications Commission reviewed these concerns during notice-and-comment on its plan to repurpose C-band from...