Defiant is getting closer to embarking on a key long-endurance cruise that could have important ramifications for the U.S.

The Defiant will have to pass one final test that comes in the form of a long voyage out on the open seas, facing different ...

Wendy Williams pushed back against her guardianship in New York City after new medical tests confirmed her dementia.

DARPA christened the USX-1 Defiant, a 180-foot fully autonomous medium unmanned surface vessel built for the U.S. Navy.

Following its christening, the USX-1 Defiant soon will begin an at-sea demonstration of its reliability and endurance. The ...