Provision of rigging services to hotels, convention centers, stadiums, arenas, sports and entertainment venues; rigging services for meetings, conventions, trade shows, motion pictures, television shows, music shows, sports, and entertainment venues; provision and installation of rigging equipment for audio-visual displays, lighting, stage and movie equipment, namely, trusses, electrical motors, airwall hangers, beam clamps, cheeseboroughs, chain hoists, rigging boxes, round slings, scissor lifts, shackles, and wire rope