I mounted a FLIR M-Series Maritime marine thermal video camera onto the roll cage of my pioneer after some cutting with the plasma torch and welding, it sees over a mile in total darkness, every living breathing thing stands out like a sore thumb!
It is a remote controlled active scanner that you can program to sweep 360 degrees around or 180 degrees from front to back with a high definition LCD viewer in the cab.
Entire setup is 100% Mil-Spec waterproof, dust proof, vibration proof, shockproof, etc.