This big beauty from Medford Knife and Tool is ready to take on hardcore survival chores or face tactical drills. The AIO-2 features steel that's tough and can handle aggressive treatment, and the belly is made for slicey work. Use the prepared holes and lash the knife to a pole, if needed, and you've got a spear. A lanyard hole and sharp jimping on the the striker on the butt of the handle round out this knife's usefulness, while the full tang construction is practically indestructible.