When venturing out in the wilds, ensure you have the very basic survival needs on your person (Swiss knife or multi tool, fire starting materials, compass & map, whistle etc). These small item can be in your pocket, or worn around your neck. Next, if you have a larger field knife with sheath, you can fashion a slightly larger survival kit to your knife sheath with other items such as an emergency blanket, small flash light, additional compass, cordage or any other items your feel necessary. This knife should be on your belt. All other field gear is in your pack. The idea here is that if your were to become separated from your back pack, you can rely on the other items to be with you, if for some reason you were to loose your larger knife and survival kit you can still have the absolute basic on your person. it's up to you what you want to carry, the key is to have at least three means of providing yourself with survival gear.