Why did Eve have an arm cannon?
Think about it: Eve is sent down to Earth to search for plant life. So why give her an arm cannon? What need or use could it possibly have for it?
If they were sending it to some completely alien, unexplored world where they didn't know what it might encounter, then an arm cannon would make perfect sense. Here though, I can't figure out what the point of it was. Isn't this kind of like giving an archeologist an uzi just before he goes to dig for dinosaur bones?