The nation’s top military officer is visiting U.S. troops Monday in Puerto Rico and on a Navy warship in the region, where the U.S. has amassed a fleet.
Justices were skeptical Monday that the case was an exception to other lawsuits against defense contractors, which usually get immunity in such litigation.
Soon after planes were first used in war, there were specialists on the ground coordinating strikes. Space-based weapons could one day yield new observers.