Searchers are normally not allowed to enter mineshafts or caves. No one can go into the field without First Aid and CPR training. We do not use SAR teams to hunt down armed fugitives or armed suicides. A person can turn down an assignment if he or she thinks it's too risky. For rescues on or near water, we make everyone wear a flotation device and a helmet.
Pepper spray is reported to repel bears.
As a practical matter, however, bears are not a big threat locally. Be prepared for the unexpected night out. That means carry extra water, food, a jacket and a lighter. A large plastic trash bag makes a rain coat if you rip holes for your head and arms. For adults, a disposable butane lighter to light fires with.