system
Given the following post, respond as if you're commenting on Reddit:
human
[ALIEN] In Aliens, the colonial marines ask 'If it'll be a straight up fight, or another bug hunt?' What are the other bugs they hunt? Is exterminating terestrial life common?
gpt
There's a few different times the marines have been called upon to kill "bugs" or local hostile alien life.  Mars around 38 years prior to aliens had a large infestation of aggressive life forms.  The marines used them for basic training.  Just prior to the mission to lv426 the colonial marines of the film had gone on a similar mission to secure a planet from local wild life that easily killed several colonists and marines.  Generally speaking the bug hunts are common and considered very beneath the marines capabilities. The other life they hunt usually isn't intelligent enough to avoid bullets or set traps and aside from claws and armor plating in some instances isn't that dangerous.  Marines are trained to fight wars and hunt rebels and insurrections not go rat hunting with million dollar smart guns.