What type of device helps to secure a rope during descents?

Descent devices, such as figure-8 devices and brake racks, play a crucial role in rope rescue scenarios by allowing for controlled descent and secure rope management. These devices work by creating friction against the rope, which helps to slow down or stop the descent of a rescuer or victim.

The figure-8 device features a shape that allows the rope to pass through it in a manner that facilitates controlled feedback during a descent. This means that users can modulate their speed, ensuring they can descend safely rather than falling uncontrollably.

Brake racks operate using a series of bars around which the rope is threaded, providing even greater control over the descent. As the rope is pulled, more friction is applied, enabling the user to execute a controlled unloading of the rope, further enhancing safety.

In contrast, climbing gear is more versatile and does not specifically cater to the controlled descent functionality. Elastic bands are not suitable for securing ropes in descent situations, as they do not provide the required friction or stability needed during such operations. Retraction systems typically serve to retract or pull back a rope rather than secure it during a descent.

Thus, descent devices specifically address the needs for secure and controlled descents, making them the appropriate choice in this context.