Must possess: mobility to work in various parks and open space areas; strength, stamina, and mobility to perform medium to heavy physical work, to work around machines, to climb and descend ladders, to operate a variety of tools and equipment, and to operate a motor vehicle; vision to read printed materials and a computer screen and to distinguish colors in wiring; hearing and speech to communicate in person and over the telephone or radio. Performs a variety of support duties for District parks and open space areas and facilities, including, but not limited to, assisting Park Rangers, visitor services, interpretation services, camp services, and parks and facilities personnel.