Daniel Hickman and David Nguyen, members of the U.S. Army Engineer Research and Development Center’s Coastal and Hydraulics Laboratory’s Unmanned Aircraft Systems Team, prepare a UAS for flight over a landslide at the Vicksburg National Military Park. The team is gathering photographic and LiDAR data in order to aid in the assessment of landslides and erosion that occurred last month in the park due to unprecedented amounts of rain and heavy downpours.