According to David Paulides, here are some safety tips,
Safety Tips:
- Tell others of your location and times of entry and exit - they know to contact authorities if you miss your check in
- Check the weather beforehand
- Find shelter, start a fire, stay dry, stay put
Packing List:
- Identification
- Extra Water
- Large/Lawn Trash Bag
- Satellite Phone
- GPS + Personal Locator Beacon
- Whistle
- Knife
- Firestarter
- Bright Colors + Extra Layers
- Firearm + Extra Ammo (for repeated 3-shot signaling)
Here is a different guy's recommended SAR pack list, which is a bit much for a casual hike, but is still good info depending on the season, weather, and terrain:
https://searchandrescues.com/master-pack-list