At work, you are called to give care for a co-worker who has fallen from an 8-foot ladder. As you arrive, you see the injured person lying on the ground. They are crying and moaning in pain. A bystander says that the person landed on their back. The injured person has not moved from this position. The person says that they have tingling and numbness in their legs and feet and pain in their back. The person also has a 2-inch laceration on the side of their head. You want to help. Describe the immediate steps that you should take in responding to the emergency to determine what your plan of care should be.