So, in my story the United States Army created a large amount of new weaponry and armor to protect its troops while they marched into the resource rich countries of South America. They invented powered armor, warrior robots, and energy powered weapons. The most devastating weapon of theirs was the DC defender 16 portable nuclear warhead launcher. It gives a load of 100 tons and is supposed to be lightweight enough for an average soldier to carry. How could you make a weapon to do these tasks?