It's like the Men in Black, but they're outlaws who fight aliens because the government Men in Black (LSF) and blackops PMC (Bounty Hunter Core) want to catch the aliens and use them for their own gains, when the Order thinks they should be destroyed.
Basically where greed and corruption, desire for power and powertrading caugh other factions that flert with nomads and their technology, order remains pure in their desire to obliterate entire nomad threat once and for all.
people think "they're lame" until another Nomad invasion occurs, then everyone cries their name