Ancient by information age standards, Hunter is an Army drone that’s been in use since the Kosovo War in 1999. At 2,000 pounds, it’s neither sleek nor personal, more of a family car that’s hardy enough to have abundant cup holders than a hot rod. But with a heavy fuel internal combustion engine that allows it to operate from unimproved airstrips, Hunter can fly for over 18 hours, giving it the endurance and range necessary to support ground operations out to some distance.