Rapid Trace Detection and Identification Systems for Explosives, Narcotics, Chemical, Radiological and other threat substances like: human odours, characteristic compounds of contraband tobacco bulk shipments and specific bio-markers indicative of pathogens or other biological threat materials. Food volatiles can be programmed to determine food spoilage or contraband food items. The Detection System uses gas chromatography with a dual polarity axial ion mobility spectrometer (AIMS) & is ideal for checking human beings, vehicles, air & sea containers.