Electronic reconnaissance systems comprised of antennas, computers, machine readable computer programs, direction finding receivers, radio frequency distribution and switching apparatus; signal acquisition and classification apparatus; radio jamming apparatus; broadcast equipment for wireless transmissions, radio and television, namely, antennas and structural and electrical components, parts and accessories therefore, namely, switching apparatus, diplexers, telecommunication towers, transmission lines and cables, matching units and control apparatus; electrical fiber-optic communication transmission lines for audio and video signal transmission; optical waveguides; metallic waveguide and coaxial cable and end-connectors; airflow sensors; underwater safety lights to direct the movement of fish; electrical controllers, namely, lighting controllers and power converters; emergency warning lights, namely, aviation obstruction lighting; airport lighting systems; security lighting systems; beacon and obstruction warning systems and component parts; handheld computer for detecting leaks in pressurized cables; machine-to-machine monitoring equipment for telecommunication, lighting, diagnostic and monitoring equipment

Cable pressurization units, namely, units for use in forcing dry air into telecommunication cables in order to protect the cables from water damage, such units comprising air compressors, air dryers for the removal of water vapor from compressed air, air pipe manifolds, and access panels for meters and pipes, electric dehydrators for continuous drying and removal of moisture from compressed air

Installation and maintenance of steel and metal antenna support structures, antenna towers, and lighting equipment