CBS News reported that Homeland Security Secretary Markwayne Mullin briefed reporters on Friday on the ongoing Federal Aviation Administration ground stop. Mullin said the stop was caused by a telecommunications outage and that there was no indication of an attack. Major Garrett anchored the network's ongoing coverage of the stop.

The Hill reported that an FAA post said the agency issued a nationwide ground stop for all U.S. airports following a "communication issue." The summary of that report was cut off before the rest of the FAA statement. The Hill also reported that Mullin and Transportation Secretary Sean Duffy planned a press briefing at the White House on Friday night to update the public on the stop.

NPR reported that Mullin spoke at the White House on Friday afternoon after the FAA issued a total ground stop. Its headline said Mullin stated there was "not a threat" to the United States. The report was written by NPR reporter Deepa Shivaram, who was at the briefing.

The reports differ on timing. NPR placed Mullin's remarks on Friday afternoon, while The Hill described a briefing on Friday night. The summaries do not say whether they describe the same appearance, and CBS News did not give a time in its summary.

The reports do not identify the system that failed, the number of flights affected, or when the ground stop would end. CBS News described the stop as ongoing in its coverage.

Sources: CBS News: Mullin says FAA ground stop caused by telecommunications outage; NPR: DHS head Markwayne Mullin says there is not a threat to the U.S. amid FAA ground stop; The Hill: Watch: Duffy, Mullin hold press briefing on FAA nationwide ground stop.