In the Photo above the firefighter was preparing to don there SCBA and it became entangled around there head. In the drill below the intent is for firefighters to become familiar with the parts of the SCBA and Don it with zero visibility.
The firefighters will need to be in full protective clothing and mask. The mask is to be blacked out and they are to be lead in to a dark area where the SCBA can be taken apart, straps tighten down, or wrapped together. You come up with it. Just make it realistic. This will go hand and hand with your practice of Donning the SCBA and how you conduct your daily check off.