Was securing a skating rink for my service the other day. During my mostly boring time in the rink I started simulating scenarios and M.O in my mind, when a question popped in my now frozen mind: child falls on ice, back first. Kinematics hard, child lying on ice. What should I do until a unit comes (I was alone with an AED and a back pack basic AB equipment): Child should be covered and isolated from the ice on the one hand, on the other hand moving him without collar-backboard could jeopardize spinal stability. Provided it takes the unit about 10 min to arrive, child complaining severe back pain, what is the best M.O. for this case?