What's the difference between an ISIS training center and a school?
I don't know, I just fly the drone.
What's the difference between an ISIS training center and a school?
I don't know, I just fly the drone.
This is a dark joke that plays on the idea of drone warfare and the lack of concern for the target. The punchline implies that the person operating the drone doesn't care what the target is, they're just following orders to fly and strike. The use of "ISIS training center" adds a layer of seriousness, contrasted with the flippant attitude of the drone operator.