It's a term that's casually thrown around in movies and novels. But what does "DEFCON" mean, and what's the significance of each of its five levels?

Experts question whether Edward Coristine, a DOGE staffer who has gone by “Big Balls” online, would pass the background check ...

Elon Musk's DOGE has taken control and accessed large swathes of Americans' private information held by the U.S. federal government.

President Trump has revoked the security detail for former Defense Secretary Mark Esper, joining a slew of others who have ...

Former Defense Secretary Mark Esper's security detail, which was provided by the Defense Department, was pulled Tuesday night ...

Elon Musk is now considered a “special government employee” by the White House. But exactly what kind of access that provides ...

The U.S. Agency for International Development’s director of security and his deputy were placed on administrative leave ...

Democrats and other critics are now demanding that the White House disclose the list and details of the people Trump allowed to skip background checks and gain access to the country's most sensitive ...

The president has denied protection to four men he put in mortal danger.