U.S. Army Staff Sgt. Edwin Williams, South Carolina

U.S. Army Staff Sgt. Edwin Williams, South Carolina Army National Guard, 218th Leadership Regiment instructor, provides guidance and direction to Soldiers operating the 621B motorized scraper and D7R crawler tractor to quickly dig a 6-foot trench using a push-assist technique as part of the horizontal construction engineer reclassification course at McCrady Training Center, Eastover, South Carolina, April 2, 2017. Soldiers currently enrolled in the two phase course, arrived from Puerto Rico, Georgia, North Carolina. The fours weeks of intensive training started with smaller pieces of equipment and slowly progressed to larger vehicles. (U.S. Army National Guard photo by Sgt. Brian Calhoun, 108th Public Affairs Detachment)