A 56-year- male patient involved in a MVC is brought to the ED of a rural critical access facility. He c/o neck pain, SOB, and diffuse abd pain. His GCS is 15. His vitals are as follows:BP 98/71HR 125 beats/minRR 26 breaths/minSpO2 94% on high flow O2 via NRB maskwhich of the following is the priority intervention for this patient?