Sea Hunter
We could tell what the vehicle could do by checking its name. Sea Hunter was the Anti-Submarine Warfare Continuous Trail Unmanned Vessel, or ACTUV. The National defenses might have been fascinated about a submarine that was beneath the coast. So, to prevent the sub from lurking in their territory, they created a silent ship that could fight a submarine.
Sea Hunter
The Gladiator UGCV
The Gladiator UGCV was an improved version of the bomb disposal system that the Marine Corps created. The vehicle was faster, had impressive maneuverability, and had a more extended range than the previous vehicles used for this situation. The Gladiator was also equipped with small-arms fire protection, which made it one of the best combat drones in this era. The vehicle also contained different weapons. It could also be used for the transportation of supply.
The Gladiator UGCV