Sean Duffy blames Friday's FAA outage on copper-to-fiber wiring work at a remote facility, saying contractor L3Harris may have installed a "faulty router" (Joseph Pisani/Wall Street Journal)

Joseph Pisani / Wall Street Journal : Sean Duffy blames Friday's FAA outage on copper-to-fiber wiring work at a remote facility, saying contractor L3Harris may have installed a "faulty router", Work at a single remote location caused instability that led authorities to order nationwide groundstop; airlines continue to cancel flights as they rush to reset.