CORNbread

Hi, Im new to the boards and new to the mod but I have to say its pretty sweet so far (havent played too much yet). Just one thing, in the early missions, when im still only using shotguns and lame colt .45s, theres aliens that are firing these rockets and shooting some crazy gun (needler?) at me. Now correct me if im wrong but there werent any aliens with those kind of weapons in the normal game. Just wondering if this is part of the mod and if its *supposed* to be because its quite hard to take out rocket launchers with pistols. -CORN