Whomever attacked the airbase with this gaggle/flock/swarm/squadron/flight of armed drones took a page from the Red Army's long standing modus operandi of massing effects. That tells me that a military mind, or one with a good understanding of how to apply effective military tactics, was behind this attack. As one crusty old iron major once pointed out: you may not like the enemy, but never for a moment presume that the enemy is stupid.
Good point made by A_Van about training air base personnel on this as a part of their threat calculus/force protection measures. Likewise the comment in re jamming by unmanned droid.