Which is NOT part of the hypothermic peer treatment protocol?

Direct heating with the sun's rays is not part of the hypothermic peer treatment protocol primarily because it is unreliable and ineffective in providing controlled heat. While natural sunlight can raise temperatures, it is inconsistent and can vary widely based on the environment, time of day, and geographic location.

In contrast, insulation of the casualty is a vital component of managing hypothermia, as it helps to retain body heat and prevent further heat loss. The application of external heating devices, such as heat packs or blankets, provides a more effective and controllable method of warming the body. Monitoring body temperature is also crucial to assess the effectiveness of the treatment and to avoid potential complications from rewarming too quickly.

Using controlled methods ensures that the casualty receives appropriate care in a safe manner, whereas depending on natural elements like the sun can pose various risks and provide insufficient thermal support.