Excerpt from the book "Men without Guns": "From the book Men without Guns:A wounded man in a burning or stalled tank is in a desperate plight. It is not easy for able-bodied men to make a hurried exit from a disabled tank under fire — almost impossible for a badly wounded man. At the Medical Department's Field Service School, Carlisle, Pennsylvania, the "medics" are taught how to lift an injured soldier from a land battleship. The Medical Corps is explaining the rescue techniques to the bleacherites. Note the special harness used to lift the "casualty' through the conning tower opening. Newer tanks have escape hatches near the bottom, simplifying the getaway."