In Predator and Predator 2(Not the others)- how did producers obtain the thermal images?

Hey Guardian I got a kick out of just reading your question if i could I would give you the points..anyway the answer to your question lies in how the mini gun worked for jessie ventura..It's Hollywood..and you can carry 2 k rounds in a 500 rnd can and the all fee perfect and the heat signature is perfect as well....wish it all worked that way...that's why they call it science fiction...From the E