Shortly after the president's ban of artificial intelligence company Anthropic, rival OpenAI announced it had done a deal with the Defense Department to provide its technology for classified networks.

The Defense Department has been feuding with Anthropic over military uses of its artificial intelligence tools. At stake are hundreds of millions of dollars in contracts and access to some of the most advanced AI on the planet.

The company's Claude chatbot is one of the few AI systems cleared for use in classified settings. But a standoff between Anthropic and the Trump administration is putting its government work at risk.

The Federal Aviation Administration abruptly closed the airspace around El Paso, only to reopen it hours later. The bizarre episode pointed to a lack of coordination between the FAA and the Pentagon.

Documents show the U.S. military is planning to sever all ties with the organization formerly known as the Boy Scouts.

During the speech last month, Defense Secretary Pete Hegseth lectured senior military officials on the "warrior ethos," focusing on fitness and grooming standards, and calling out "fat generals."

The U.S. Army announced that 141 of its 236 horses, donkeys, and mules will be put up for adoption, in a move it says will save about $2 million dollars.

Hurricane forecasters and scientists rely on weather data collected and processed by Department of Defense satellites. The Navy has decided to stop sharing the data.

Charles C. Rogers was awarded the Medal of Honor by President Richard Nixon in 1970. But a profile of the Vietnam War veteran was caught in an "auto removal process," the Defense Department says.

A U.S. Army base originally named after a Confederate general, then renamed Fort Liberty, will revert to the name Fort Bragg. Its new namesake is WWII hero Roland Bragg — unbeknownst to his family.

Vice President J.D. Vance cast a tie-breaking vote as Hegseth overcame allegations of sexual assault, public drunkenness and questions of financial mismanagement to win Senate approval.

Former Secretary of Defense Chuck Hagel says "a lack of any government experience is an issue" when leading the largest institution in the world.

The investigation and prosecution of major criminal offenses now shifts to independent prosecutors in a bid to strengthen the accountability of the military justice system.

Frederick Moorefield Jr., a deputy chief information officer for the Office of the Secretary of Defense, allegedly used an encrypted messaging app to discuss dogfighting with people across the U.S.

Sens. Elizabeth Warren and Kirsten Gillibrand are questioning the Departments of Education and Defense after a New York Times investigation showed reports of sexual misconduct among JROTC instructors.