Must possess the physical ability to perceive the nature of sounds, make rational decisions through sound logic and deductive processes, express or exchange ideas by the spoken word, substantial movements (motions) with the hands, wrists, and/or fingers, and discern letters or numbers at a given distance. Additionally, the following physical abilities are required: balancing, climbing, crawling, crouching, feeling, grasping, handling, hearing, kneeling, manual dexterity, mental acuity, reaching, repetitive motion, speaking, standing, stooping, talking, visual acuity and walking.