What does a "red card" indicate during a training simulation?

The "red card" in a training simulation signifies a concern for safety. This alert system is designed to prioritize the well-being of participants during high-stakes training scenarios. When a student or instructor raises a red card, it typically means that there is an immediate issue or potential hazard that needs to be addressed, ensuring that safety is maintained throughout the training session.

This system allows for quick communication of safety concerns among team members, enabling instructors to pause the scenario and assess the situation. By having a clear, visual indicator like the red card, all participants are reminded of the importance of safety protocols and can respond effectively to any risks that arise, thereby fostering a safer learning environment.

In terms of the other options, while concerns for equipment failure, requests for additional resources, and indicators of student progress are important aspects of a training simulation, they do not directly relate to immediate safety concerns, which is the primary focus of the red card.