Isaac has the answer: smoke.
Make sure that the first thing that happens is smoke administered to the colony. Not the banging and clanging of a ladder or the probing of the beekeeper's hands.
If the entrance is somewhat high you can buy PVC conduit in 1 1/2" or 2" in 10' lengths and puff smoke from your smoker from the ground before you even place the ladder. The smoke will flow right up the conduit to the colonies' entrance.
Smoke is the answer, but it must reach the agressive colonies BEFORE they become alarmed, not after.
Make it a cool white heavy smoke.
You should do fine.
Just say NO to excuse-izm!
If my bees die, I am responsible.