U.S. Army Engineer Research and Development Center researchers observe the Robotics for Engineering Operations autonomous vehicle while it traverses during the Maneuver Support, Sustainment and Protection Integration Experiments-2020, or MSSPIX-20, in Fort Leonard Wood, Mo., Sept. 16, 2020. The REO employs a set of robotic platforms to remotely characterize a site by fusing multiple sensing modalities on a fully autonomous unmanned ground vehicle to capture critical information for engineer missions.