
“Two registered adult leaders or one registered leader and a parent of a participant, one of whom must be 21 years of age or older, are required on all trips and outings.”
The phrase to remember is “two-deep leadership.” All BSA outings require either two registered leaders or a registered leader and a parent (and one of them must be 21 or older).
In our Cub Scout Pack, we usually have little difficulty meeting this rule because we ask parents to come along on all our outings anyway if possible.
And remember that Tigers (first graders) are required to have their adult partner present at all Cub Scout events.