A flashlight can be a lifesaver if you become lost.
Rescuers can see light from a flashlight from a great distance.
Choose your flashlight carefully, and be sure it has good batteries. A big flashlight will have lots of light but be very heavy. Try to carry a small, powerful flashlight. If you become lost, stay in one place and flash your flashlight in a circle every half hour. If you see a light flash at you, flash back, it is probably a rescuer.