The flight crew on the ground always has visual confirmation of the shots via remote video camera that is also mounted in the aircraft. The video camera also has tilt capability that allows the camera to assume any position between vertical down and horizontal front. This allows the flight crew to fly the plane remotely, even if they do not have visual contact with the plane from the ground. The RC system is extremely versatile. The lightweight aircraft and supporting equipment is transported in a van that allows the crew to access almost any site, no matter how remote.
Landings also require little in the way of space.
Site characterization activities such as drilling, hazardous waste sampling can be documented with the large scale aerial photographs.