The rolling methods consist in rolling the casualty on their side; it is then possible: to put a long spine board against their back, then to roll back the casualty on their back; to slide a folded flexible stretcher (or a blanket); the casualty is then rolled on the other side to unfold the flexible stretcher. The casualty can then be lifted with the handles of the long spine board or of the flexible stretcher (or holding the rolled sides of the blanket), and put on the stretcher. Usually, the method is done with four first responders, including the chief: the chief is kneeling at the head, in the axis of the casualty, and holds the head; the first team member is kneeling besides the casualty, and holds the opposite shoulder and the opposite hip; the second team member is kneeling at the feet, in the axis of the victim, and holds the ankles; at the order of the chief, the casualty is rolled towards the first team member, and the fourth team member puts the board or the flexible stretcher in place. This method can be adapted to place a casualty on a vacuum mattress (see this article). This method can also be performed by only two first responders: the chief plays the role of the first team member, and the only team member deals with the board (neither the head nor the ankles are gripped). This is rather traumatic for the casualty, but can be used when there is non suspicion of trauma, either in emergency (e.g. to transport a cardiac arrest when advanced life support cannot be performed on site), or when the first responders are lacking. The method with a flexible stretcher was inspired by the method used to change the sheets of an impotent patient at the hospital. The flexible stretcher is placed beside the casualty, and a sheet is put on it. The third of the stretcher that is the closest to the casualty is folded on the middle third. The casualty is first rolled away from the stretcher, and the stretcher is slid against the back of the casualty. Then the casualty is put on their back and rolled on the other side; the stretcher and the sheet are unfolded. The casualty is wrapped into the sheet, and can be lifted with the handles of the flexible stretcher. It is also possible to