The Transportation Security Administration (TSA) is conducting market research of Stand-off Detection (SOD) systems for the screening of passers-by in the non-sterile areas of airports. The preliminary goal for the SOD is a system capable of detecting explosives concealed on the bodies of passers-by in those areas without interrupting the flow of traffic in the stream of commerce. The threat objects of interest include a wide variety of military, commercial, and homemade explosives or explosives devices. Sol. No. HSTS04- 09–R-ST2023. Respond by May 7. Contact: Venita Mathias, contract specialist, 571-227-1201, [email protected].