Skynet/Rev 1

The DARPA program named LongShot should actually be called Skynet/Rev1 as this UAV is a first of its kind, able to hunt for targets on its own once released from larger aircraft and given initial commands by a human operator in order to save lives by limiting the use of manned aircraft to do the same thing.  

The plan is for the system to launch from a bigger manned aircraft, jet off to a certain area out of the way of land-based missiles, and engage in multiple combat threats using its weapons. The chances of humans being harmed would be minimized as it would be an unmanned drone-like aircraft. 

Further down the line, the LongShot program will build and fly a full-scale air-launched demo system that puts on display its controlled flight capabilities before, during, and after launching weapons.

Question ... who or what controls this system?

What's different about DARPA's LongShot program UAV is that not only will it offer a way to engage targets from a larger distance, but it will also fire missiles much closer to the targets. Given missile ranges and capabilities keep increasing year on year, it seems essential to also increase the maneuverability and range, as well as unmanned flying systems, to counter such advancements.

Sounds like Skynet to me.

In the original 1984 movie, Skynet is a revolutionary artificial intelligence system built by Cyberdyne Systems for SAC-NORAD. The character Kyle Reese explains in the film: "Defense network computers. New... powerful... hooked into everything, trusted to run it all. They say it got smart, a new order of intelligence". According to Reese, Skynet "saw all humans as a threat; not just the ones on the other side" and "decided our fate in a microsecond: extermination".

We have lost control as we don't know how AI works.