Report of shots being fired at the site of a 2013 mass shooting brought a swarm of law enforcement personnel, emergency vehicles and reporters to the scene.
In just 18 months, China has created more than 2,000 acres of new land where before there were just waves and reef, according to the U.S., which sees the work as a threat to regional stability.
The U.S. Navy has completed the largest robotic survey of the Arctic ever attempted. Warming waters are absorbing more sunlight and melting more ice there each summer, the gizmos and gliders suggest.
The U.S. Navy says it made a "historic leap" by deploying a laser weapon system for the first time. A video shows the system, based on the USS Ponce in the Persian Gulf, taking target practice.
The U.S. defense secretary said the Pentagon is aiming to invest about 10 percent more over the next five years to fix "systemic problems" of leadership, morale and aging equipment.
The sailors were from the USS Ross, a warship docked nearby. Protesters from a left-leaning group pushed them, placed sacks on their heads and chanted, "Yankee, go home." The sailors escaped unhurt.
Authorities have released a partial list of victims. The dead suspect was identified as Aaron Alexis, a 34-year-old, full-time Navy reservist from New York.