American Science and Engineering, Inc.'s MobileSearch High-Energy (HE) cargo and vehicle inspection system features both high-energy transmission and proprietary Z Backscatter X-ray imaging for detecting threats and contraband including weapons, explosives, drugs, and currency. For added flexibility, the system offers multiple scan modes for high speed scanning of passenger vehicles or oversized or odd-shaped cargo, allowing the operational flexibility of the Z Backscatter Van - in either "drive-by" mode to scan stationary objects, or "portal" mode to scan vehicles as they drive past the system. MobileSearch HE also features a integrated cab design that enables the drivers and operators to be in the same spacious cabin for improved communications and comfort. MobileSearch HE is ideal for homeland security and drug interception missions at seaports, border crossings, and other high threat checkpoints. The system offers the largest tunnel size in the industry, allowing for the inspection of oversize cargo and vehicles. MobileSearch HE can travel on roads and at highway speeds.