Brigade and division commanders have a lot of things to keep track of in the field, and all this is done from a tactical headquarters. This organization moves a lot, and usually operates out of some hastily erected tents. Currently, a Modular Command Post Tent System (MCPTS) is used. Two or more 11x11, 121 square foot tents are set up next to each other to make as large a headquarters as is needed. But with the growing use of large computer displays and a "mission control" type atmosphere, one larger tent has been in demand. So next year, the U.S. Army will put the Large Standard Integrated Command Post System (LSICPS) will enter service. This is a 450 square foot tent with one large, unobstructed open space for the headquarters. Six troops can erect the LSICPS in 25 minutes. The tent is designed so that the electrical, lighting and climate control attachments snap right into place during assembly. One of the more difficult design aspects of military tents is the ability to deal with snow, or at least the snow that accumulates on the top of the tent. As was seen in Iraq, there's also the potential problems with high winds and sand. Rain can also be a problem, and the LSICPS uses heat-sealed, stitchless seams to deal with that. Once the LSICPS is erected, the computers, maps and other gear are moved in, power and climate control (hear or air conditioning) are set up and the headquarters is operational an hour after arriving at the new location.