A pilot inspects his helicopter prior to a mission. British Merlin helicopter practice in the Arctic, near Bardufoss, Norway.

845 Naval Air Squadron is a squadron of the Royal Navy's Fleet Air Arm. Part of the Commando Helicopter Force, it is a specialist amphibious unit operating the Leonardo Commando Merlin Mk3 helicopter and provides troop transport and load lifting support to 3 Commando Brigade Royal Marines.

©Fredrik Naumann/Felix Features