A system, method, and mobile frame structure detect radiation and identify materials associated with radiation that has been detected. A mobile frame structure is maneuvered over an entity to be examined. A set of radiation data associated with the entity is received from a set of radiation sensors that are mechanically coupled to the at least one portion of the mobile frame structure. At least one histogram is generated based on the set of radiation data. The at least one histogram is compared to multiple spectral images associated with known materials. The at least one histogram is determined to substantially match at least one of the multiple spectral images. A determination is made whether a material associated with the at least one of the multiple spectral images is a hazardous material. Personnel is notified that the at least one radiation source is a hazardous material.