Just watched ROTF and realized why did any of the human troops waste their lives using those standard guns that seemed to have no effect on the Decepticons. Most of the time Autobots were killing Decepticons, mostly destroying their heads. Any the only human weapons that seemed to work were high explosives or large projectile weapons. So my question is why weren't they just all outfitted with cheap RPG launchers/high explosives and Stingers instead of their more convential anti-personnel weapons. Or even Heavy machine guns, in the end the 50 cal on the tank firing in conjunction with the tank shells made Megatron turn away. I think after dealing with them in the first movie the nest team would have had more specific weapons, I'm not even saying they needed Autobot type weapons just the ones that proved effective of our own design. I mean if all those troops have had large RPG or Stingers they could have taken out Demolishors wheels before he rolled off, their machine guns were totally useless and just got them killed. It's like in those Superman comics and other movies when they keep shooting the bad guy with the same weapons that haven't worked before.