When training firefighters on mayday procedures you should create conditions that resemble the real-life environment they will face during a mayday event. However, it will be near impossible to evoke the kind of stress response a firefighter will experience when they are in fear for their life. The stress will be intense and under such conditions the brain will be in survival mode. Under these conditions the responder may struggle to remain composed. It may not be reasonable to expect the responder will remember to change the radio channel.