This system includes everything necessary for rapid evacuation of mass casualties in a biochemical environment. Because we never know how far away we can get from the Hot-zone, the kit includes continuous loop twisted polypropylene ropes, 1 each for distances of 100ft, 150ft, and 200ft. This kit allows as many as 4 rescuers in level A. There are also 4 clean Skeds for moving patients from the warm zone to decon to prevent dragging contaminated litters outside the area. Instructional video or cd-rom included.