1. Don't panic.
2. Turn pack off. Do not panic.
2.5. Calmly ask wife where the fire extinguisher is located.
3. Unplug pack and quickly carry both head and pack outside (do not unplug head from pack).
4. Try not to inhale the thick black smoke coming from the head.
5. Get fire extinguisher and use it.
6. Make sure the fire is out
7. If possible go back and finish the photo shoot.