A minimum of four rescuers is required for the log roll procedure. One rescuer maintains manual inline stabilization of the head, while another one is responsible for positioning the spine board. At least two people are positioned on the same side of the patient to perform the roll. During the roll, the patient is rotated axially to an angle of approximately 30°–90°, at which point the spine board is placed at an angle beneath the patient. After the spine board is in place, the patient and the board are rolled back to the ground. Finally, the team must center the patient on the spine board in the supine position.