regarding your original comment: the topic at hand is weaponized commercial drones, things that can be assembled by semi-skilled enthusiasts. predators cost millions of dollars per and use satellite coms and guided munitions. isis uses off the shelf quadcopters with mortar shells. the latter is essentially the 3d printed gun of assassination tools -- there may have been forebears, but it's the accessibility and ease of deployment that is important and alarming.
https://en.wikipedia.org/wiki/Operation_Aphrodite
they were ineffective, though
regarding your original comment: the topic at hand is weaponized commercial drones, things that can be assembled by semi-skilled enthusiasts. predators cost millions of dollars per and use satellite coms and guided munitions. isis uses off the shelf quadcopters with mortar shells. the latter is essentially the 3d printed gun of assassination tools -- there may have been forebears, but it's the accessibility and ease of deployment that is important and alarming.