Customs and Border Protection (CBP) says it plans to negotiate a sole-source contract with the small firm American Innovations, Inc., for portable explosives detectors to supplement existing weapons of mass destruction equipment. The detectors will be used by CBP officers in the field to detect explosives materials. The equipment will be used to detect trace explosives using colorimetric chemical reactions combined with a unique timed heater to allow for rapid detection of a wide rang of explosives without the use of hazardous materials and will allow testing of all major classes of explosives using a single test swab.