If I had to guess, the government has had this tech since at least the early 2000s. The CIA has been doing shady ass shit since their inception, and shit like that is probably only the tip of the iceberg of what they currently have. Though they’re probably using something closer to grenades than in that film, as 1 drone to 1 kill probably isn’t enough.

That short film is one of only a few that has stuck with me.