This document provides instructions for properly applying a cervical collar during an EMT skills assessment station involving spinal immobilization of a supine patient. Key steps include placing the chin support under the chin and adjusting the size if needed, pulling the back of the collar snug while holding the front in place and fastening it, and for a supine patient, sliding the rear panel behind the neck before placing the chin support. It also notes that cannula hooks are provided for securing supplemental oxygen lines and that the scenario involves immobilizing an unstable spine using a long spine device with the help of an assistant EMT and evaluator.