The Sweet 16 of BSA Safety describe the measures we should use at all Scouting activities. The tenth point of the Sweet 16 is Planning (see below).
This point covers a lot of ground. When you are organizing an activity, what sort of contingencies have you planned for? Have you considered what you will do if the weather turns ugly? What if somebody gets injured? If you are away from ready access to emergency services this becomes extremely important. Have you told somebody who is staying back where you are going? How can you be contacted in the case of an emergency, such as a wildfire in the area or sudden inclement weather?
From the Sweet 16 of BSA Safety on the Scouting.org website:
Safe activity follows a plan that has been conscientiously developed by the experienced supervisor or other competent source. Good planning minimizes risks and also anticipates contingencies that may require emergency response or a change of plan.