What is an example of a Group IV flame effect?

A Group IV flame effect is characterized by being designed for unattended operation, which distinguishes it from other groups that require varying levels of supervision and technical oversight. These effects are typically large-scale and can operate independently, meaning they do not need constant monitoring, making them suitable for specific settings where they can safely function on their own.

The large size and design nature of Group IV effects often necessitate a well-defined safety plan and precautions to ensure that even without supervision, the operation is safe and controlled. This is a critical aspect of their categorization, as it directly impacts how they are integrated into a performance or event.

In contrast, the other options represent different categories of flame effects that inherently require some form of oversight or supervision, which differentiates them from the Group IV designation.