The first production version of the RQ-4A Global Hawk UAV rolls out at the Northrop Grumman facility at Palmdale, Calif. (Development versions were used in combat operations in Southwest Asia.)
A new think tank report calls for a buildup of U.S. drones and munitions needed for a potential fight against the Chinese military over Taiwan, thought other experts argue the report is missing some nuance in the munitions equation.
