Army Sgt. 1st Class Layne Jackson climbs a debris-covered staircase in a simulated collapsed building during urban search and rescue drill as a part of Exercise Guardian Response at Muscatatuck Urban Training Center, Butlerville, Indiana, April 13, 2018. Jackson is assigned to the South Carolina Army National Guard’s 267th Engineer Detachment (Fire Fighters). Army photo by Staff Sgt. Jerry Boffen