I would love to be in grad school and work on something like this
you know without a doubt that some day drones will be set up by hives where 24/7 sensor monitoring will alert the drone to a wasp's presence
The sentry system might kill the wasp right then/there (and maybe that bee hive entirely if a wasp-specific kill isn't available)
or maybe follow the wasp back to it's nest, where the drone will eliminate that nest by hitting it with wicked nasty pesticide, alert the beekeeper so he can check the wasp's nest out personally to make sure it got done, then the drone will fly back to the bee hives to park and be recharged with solar charge and pesticide
all without anyone doing a thing outside dropping these sentry drones off and servicing them if/when necessary
wonder if that hornet can fit through a space that a bee can barely squeeze though - maybe they could engineer hives to be giant wasp proof