Former Staff Sgt. Jason Gray was suspected of sharing classified information on Discord, where he participated in anti-government channels.
The nomination for the first U.S. ambassador to the Arctic may remain frozen, despite competition in the region with China and Russia.
Staff Sgt. Charles Crumlett, 25, of Streamwood, Illinois, died Friday after being injured in what the Air Force called a "workplace incident."
At least 31 directed-energy initiatives are underway across the U.S. Department of Defense. Some are more mature than others.
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