Are you asking why the knives are stored in the kit, or critiquing the size of the knives? Full sized field knives can be awkward to wear while in the cramped quarters of an aircraft. In the event of a crash, the small knives for cutting web strapping are much more accessable and needed. when horseback riding, I have a small neck knife for wrecks. a small fixed blade is down my boot.I got tossed once. getting hit in the kidney with your own knife hilt is no fun.