I understand the limitations of a forum like this in giving advice on properly rigging overhead, so if this is beyond what should be discussed here I understand. If we would need to fly, say, a large projector overhead, what is usually attached in the way of safety cables? Safety cables that would be in addition to the actual rigging, which could consist of a 1 ton chain motor, a spanset properly rigged to a tagged and rated flypoint, and another spanset or more as needed properly rigged to the projector itself. Put another way, is it proper and normal to rig additional safety cable(s) to the projector in case something in the primary rigging fails, knowing that all of the primary rigging is far over-rated for the weight? Thanks!