>Ahem
Might I just say that we're attacking a convoy from both sides? I don't think that you'll be able to really 'get behind' the cargo, since we're already all around the convoy, with guarding mechs presumably all around them. So you can't really get 'behind' the cargo to use it as cover, because you'll still have guys all around you. And since mechs are taller and larger than a normal truck, I don't think you could effectively hold yourself up against a truck and be relatively safe.

And they might just fire anyways.