1. A computer-implemented multispectral imaging method comprising: establishing a set of operational modes, each said operational mode corresponding to circumstance including a prevailing environmental character as generally exists between a target and plural imaging devices, each said operational mode being characterized by modal indices individually assigned to said imaging devices, each said operational mode having associated therewith an image fusion algorithm for performing multispectral imaging of said target, said prevailing environmental character including a prevailing obscuration character and a prevailing visual lighting character, said imaging devices including a visual said imaging device, an infrared said imaging device, and a millimeter wave said imaging device, said modal indices being indicative of weighting, by the associated said image fusion algorithm, of imaging data respectively obtainable from said imaging devices; obtaining target location data from a radar device, said target location data being informative of the location of said target; obtaining visual light data from a visual light measurement device, said visual light data being informative of said prevailing visual lighting character; obtaining environmental data from a radar device, said environmental data being informative of said prevailing environmental character; aiming at least two said imaging devices toward said target, said aiming of said imaging devices being based on the obtained said target location data; selecting a said operational mode, said selection of said operational mode being based on the obtained said environmental data; and executing said image fusion algorithm associated with the selected said operational mode, said execution of the associated said operational mode including obtaining imaging data from at least two of the aimed said imaging devices, fusing the obtained said imaging data, and displaying an image representative of said fusion of the obtained said imaging data.