Gemini is a multi-technology parcel inspection system that combines American Science &Engineering's Z Backscatter technology and dual-energy transmission. Z Backscatter technology provides enhanced detection of organic materials such as explosives (including sheet and liquid explosives), drugs, and plastic weapons which are easily missed by transmission-only systems in cluttered parcels. Its photo-like images are easy to interpret, potentially decreasing items flagged for secondary screening, and reducing operator fatigue. Dual-energy transmission provides outstanding image quality, and enables the quick detection of a wide variety of threats such as guns, knives, and wires for IEDs. In addition, dual-energy offers organic and metallic discrimination. Together, the Gemini systems' two technologies provide the most information available about the contents of a parcel. Gemini systems are available in multiple tunnel sizes to inspect air cargo, large packages, break-bulk cargo, mail and other small parcels to meet your security requirements for air-cargo facilities, Customs checkpoints, high-threat facilities, building lobbies, and mailrooms.