U.S. Navy Petty Officer (Engineer's Aide) 3rd Class Mark Monton, a surveyor with Naval Mobile Construction Battalion 133, describes how cold the waters of the Helmand River are during a survey of the banks and waterline of the river in southern Helmand province, Afghanistan, Feb. 11, 2013. Monton and Engineer's Aide 3rd Class Irwin Tan, also a land surveyor, worked with engineers from Regional Support Command-Southwest, NATO Training Mission-Afghanistan, to plot the river's course and depth for the sites that might be used by the Afghan Border Police in the area. (U.S. Army photo by Bill Putnam/Released)