We have excellent accountability procedures, but no procedure is foolproof, and the worst part is that the kind of person who would have sex with a young boy is deep in perversion and therefore highly motivated, so they’ll do whatever it takes to get around it. It’s not like when you post a “Security by Brinks” sign on your lawn and it scares all the burglars off because they can go somewhere else...these people are driven by terrible forces. Heck, our accountability is so tight that I’ve hesitated in the past to have my younger son’s scouting friends over to the house while I was the only adult around. We’re that careful.
Scouting has one of, if not the, best records on this issue of any major youth organization...and since the BSA is (IIRC) the largest youth org in the world, the surprise would be if these incidents never happened.
We've got a great pack for Weeblos II. Still, best to always have at least two parents at all times. That being said, I'm comfortable with the folks I've known for the past 5 years, but I'm still not taking any chances with any of the kids. Eternal Vigilance...