The attack comes amid a new chill in relations between Moscow and Washington after Russia condemned the US seizure of an oil tanker in the North Atlantic.
President Trump said he would cut the defense giant’s government contracts if it does not accelerate weapons production and act to rein in stock buybacks.
The U.S. Marine Corps' Valkyries will run using Northrop's autonomous Prism software, and use a sensor and technology package tailored to fit in a drone.
The PAC-3 is an interceptor missile engineered to strike and destroy inbound adversary missiles, including tactical ballistic missiles and cruise missiles.