Defense giants and startups vie to create orbital defenses—even as the program’s czar concedes they may be unaffordable.

Hegseth says U.S. has “all the time in the world” as the number of interdicted vessels grows.

Several things—from the players to the technology—set the exercise apart from previous experiments.

Administration officials said they would be working with the private sector to counter foreign-led distillation campaigns.

The service is trying to recruit at a record pace even as Pentagon officials insist civilian departures didn’t hurt acquisition.

The service is trying to recruit at a record pace even as Pentagon officials insist civilian departures didn’t hurt acquisition.

One group claimed responsibility for hacking the Los Angeles Metro as the federal government warns of vulnerabilities.

SecDef Hegseth disputes Tehran’s claims to have closed the Strait of Hormuz, despite lingering mines.