President Trump offered few details on how the new program, which he called Project Freedom, would work, but said interference would be dealt with “forcefully.”

One case of hantavirus infection has been confirmed in a laboratory, the organization said on Sunday. There are five additional suspected cases.

The tractor-trailer was on the New Jersey Turnpike on Sunday when it was damaged, the authorities said. Its driver had minor injuries and no one aboard the plane was hurt.