 The job is often dangerous and carries a high degree of risk due to the large amount of weight and great heights involved.A run-away line, for example, might injure the operator or others in the way of the moving equipment, and a counterweight dropped from the grid could kill or injure a person standing below.When the crew adds or removes counterweights they are often working at heights of six stories or more in the area above a stage known as a fly loft, or grid.