Some lawmakers argue Biden needs congressional authorization to strike Yemen's Houthis amid reports the White House is planning a months-long campaign.
If the F-35 upgrades known as Technology Refresh 3 aren't ready for deliveries to resume in the third quarter, Lockheed said it may slow down production.
A senior defense official said Deputy Secretary of Defense Kathleen Hicks was not notified until Thursday that Austin had been hospitalized since Jan. 1.