U.S. Army Corps of Engineers from the 497th Engineering Company, use steel template to space out six-inch pilings which will compose the frame of the new border fence separating the United States and Mexico. They then use a two-ton hammer capable of 7,000 pounds of force to drive the pilings in. The crane used to hold the hammer rest on the elevated causeway built by Navy Seabees of Amphibious Construction Battalion One (ACB-1) as part of Joint Task Force Six (JTF6). The border patrol will attach steel runway matting to the fence