Radiance Technologies, Inc. has tested and demonstrated real-time collection and on-board processing of Multispectral Imagery (MSI). Further, the test and demonstration consisted of a real-time downlink from the aircraft to the ground station and real-time display of the processed data product. The multispectral imagery was collected with a low-cost, low-profile MSI sensor, MANTIS-3T, from PAR Government Systems. The data product was created from output of a novel spectral algorithm combination that increases the probability of detection and decreases the false alarm rates for specific objects of interest. The display product was a compressed true color image in which the detected objects were delineated with red pixels. A description of the end-to-end solution, issues encountered as well as their resolution, and results will be discussed. †