Two hundred Marines will guard federal buildings in the Los Angeles area, freeing up more National Guard soldiers to back up federal agents arresting undocumented immigrants, the commander of military troops sent to the city said Friday.

Seaman Sergio Valoura, a culinary specialist from the USS Abraham Lincoln, failed to report for assigned duties, which led to a ship-wide search for the sailor, the Navy said. When he was not found aboard the carrier, the Naval Criminal Investigative Service was notified.

Army Staff Sgt. Callum Wilkie watched Chris Zwierzynski stumble and plummet more than 500 feet down the ice- and rock-strewn face of Mount Hood. That’s when Wilkie’s background as a medic took over.

An Army specialist at Fort Irwin National Training Center was sentenced Wednesday to 50 years in prison for the killing of a fellow soldier last year at the desert base in Southern California.

The Army has announced the future of air assault: the MV-75, designed to sweep into battle at more than 320 mph, skimming treetops before seeming to stop in midair as its rotors pivot to a vertical for landing. But that future isn’t here yet.

The training center is being designed so simulations can be adapted to include weapons and aircraft from other U.S. military branches, as well as NATO allies. Its location underlines the importance of Alaska and the Arctic to the U.S. 

The 101st Airborne Division will be the first to fly the new Future Long-Range Assault Aircraft, which is designed to replace the UH-60 Black Hawk helicopter by 2030, the Army has announced.

The Navy has begun a $145 million overhaul of the Puget Sound Naval Shipyard’s “electrical backbone,” the first step in preparing Naval Base Kitsap to homeport the new USS John F. Kennedy aircraft carrier.

During more than a century of manned flight, a nagging problem has been how to answer nature’s call when up in the wild blue yonder.

The veteran duo sought to establish a time record for a one-day hike by adaptive athletes on the grueling 47.5-mile trek from the South Rim to the North Rim and back again. After hiking 24.5 miles, it became clear they were not on a pace to complete the route in one day.