able and co.
way back in the early 80, or late 70s, there was an assignation attempt made on f marcos, philippines. used was a tariner type r/c aircraft filled to max with explosive material. the attempt missed, most likely due to operator depth perception error, but did result in several fatalities/injurys in the assembled crowd.

now can that be considered terrorist use or is it some other use? yp for debate, but , the model as a means of weapons delivery is a fact, not imagination.