Africanized Bees are not up this far North. To cold.
Bee's do not attack for no reason, so always safe. In fact Bee's are extremely friendly, just very curious about you/me. Bees will immediately defend themselves if you swat at them, just ignore them, or push them away not swing your hand or panic.
Bee's handle sticky situations very well, ever get bee propolis on your fingers, stuff's worse than your sticky dabs. No worries about the bees getting stuck on the nugs. I'm betting they will gather the oils for making proplolis, I'm placing propolis screens in the hives in August after flowering starts.
Sometimes they just like to dive bomb for no reason I can figure except that one's just a pissy little girl.
Harvesting Blackberry Honey on the 4th July should have about +-120lbs of yummy Bee Barf.