First exposure face and airways. Free airways give evidence of an air pocket and is an important information for the emergency doctor. Clean the airways from snow and initiate first aid activities:
Cardiopulmonary resuscitation (30:2)
To avoid misunderstandings, make again an emergency call to give the rescue team a situation update.
The evacuation should be done by professional rescuers! If a relocation or an evacuation is urgently needed, the injured person has to be transported as gentle and not as soon as possible!