A Georgia man who gave his teenage son the gun he’s accused of using to kill two students and two teachers at a high school has been convicted of second-degree murder and involuntary manslaughter.

A Georgia jury held a father criminally responsible for the actions of his teenaged son who — while armed with an AR-15-style rife that had been kept inside their home — allegedly gunned down two ...

Palmer Luckey, who founded the defense tech start-up Anduril, has become the It Guy as President Trump aims to modernize the U.S. military with autonomous weapons.