Kneel astride the casualty and lift the arms over your head so that the wrists are at the back of your neck. To be carried by this method, the casualty must be in the supine position. It is particularly useful when you must crawl underneath a low structure, but it is the least desirable because the victim�s head is not supported. TIED-HANDS CRAWL.� The tied-hands crawl, shown in figure 4-86, may be used to drag an unconscious person for a short distance.