Office of Naval Research along with many government agencies have invested in research and development of various concepts of detecting explosive threats (mines, IEDs, and Home-Made Explosives) and their related components (metallic and non-metallic) at stand-off distances. While improvement in sensitivity and selectivity of explosive detection sensors have increased, challenges still remain to acquire relevant information rapidly enough to maintain an operational tempo while maintaining a safe stand-off distance in expeditionary operation (vehicle or other small platform operation). Most of the current optical and Radio Frequency (RF) solutions suffer poor collection efficiency due to severe scattering from the targets, hence, not capable of providing sufficient coverage. Ideal solutions should include determination of all types of explosives, provide sufficient coverage rate enabling detection, classification, and identification all the explosive threats from a moving platform. In order to address these challenges, this announcement is seeking innovative research topics that can address the following research areas.