If you’re hiking or engaging in photography or bird-watching during hunting season, it’s a good idea to cover your pack with a second blaze orange safety vest to avoid getting shot in the back. … You need sun screen whenever you’re outdoors for any length of time. Clouds don’t block ultraviolet light or prevent sunburn as many tourists in Hawaiï discover to their dismay on overcast days. Even though you wear a hat, you still need to apply sun screen because snow, …