It surround the neck
of the victim from the front, with the central area of the device body under the chin.
the ends of the device are placed in the front of the accident victim.
of the device are then brought around to the back of the neck.
of the device are crossed from behind and the ends passed under the armpits, resting on both clavicles from front to back.
the ends are pulled to extract and drag the injured person to an area where treatment may be performed.