The MDARS-Exterior Program extends the robotic security and inventory control concepts of the Interior program into the realm of semi-structured outdoor environments (i.e., improved roads, defined fence lines, and standardized storage layouts) such as storage yards, dock facilities, and airfields. Inventory control will consist of verifying the contents of closed structures (i.e., warehouses, bunkers, igloos) without the need for opening, as well as inventory of items that are stored outside of structures (planes, HMMWVs, etc).