Palmer Luckey made his fortune with VR headsets, founding Oculus as a teen. Now he's focused on the future of warfare, developing autonomous weapons powered by AI for the U.S. military and its allies.

FORT SILL, Okla. — In the rolling plains of Oklahoma, the U.S. Army is taking aim at the future of air defense, and it’s powered by lasers. Recently at Fort Sill, Soldiers conducted a live ...