We had a swarm in my aunt's back yard when I was a kid, My aunt tried to use a hose on them, and was chased away, so my father called the bee man, much the same as above, no protection, put the bees in a big bucket and away to the bee man's little world of bees. A friend of mine has bees, now he captures swarms, but he just takes them home and puts them in his hives in the backyard. He has other hives round about on farms, and sometimes moves the hives to orchards to pollinate the trees. I think swarms happen quite a bit this time of year. Hives get overcrowded, a new queen is made, or crowned, or invested or something, and she takes the overflow somewhere else. My dad was quite well read on bees, as a friend of his at work kept bees, but was illiterate.