I have attested to the fact that bees don't attack while swarming in posts #13 and #16 in this topic. However there aren't enough facts in yet to warrant being sure of the Africanized version. One should consider all bees at this point here in the South West as being Africanized. I have stood in swarms recently testing them for aggressiveness and have not been stung as yet. I wouldn't recommend anyone that is not used to bees and close to an escape and has his system built up against bee venom to do this sort of thing. If one is fearful he radiates this to the bees and sometimes they will attack. If you kill or injure one by swatting at them they pick up on this also and will come at you enmasse. I am starting to carry a pepper spray but I don't know just how it will work on them as yet. There is really no way to get away from them in the desert as trees and bushes are limited there. That is the best way to shake them off by running in and out of foliage. Take care out there guys.