And the United States isn't the only country interested in developing long-range and lethal drone technology.
Groups of European and Asian nations — allies and former adversaries alike — are busy investing in next-generation unmanned aerial vehicles of their own.
These UAVs — some in development, some testing, and some already in service — are part of a global competition to gain aerial superiority.
But right now, only a handful of companies are working seriously on this next wave of drones. Some are researching independently, some are working for a single nation, others are working for a dozen.