[quote=HeySeuss]
They don't necessarily have to jump with rocket packs. IRSOGs are not specifically jump troops; they use whatever insertion method suits the mission best.
[/quote]

I know, though Traests specific group of four squads was in the history. At least they can perform normal ops but do have jumppacks (Rather than rocket packs. Jump packs cause they're smaller, and lighter. Also only meant for getting around quickly not really for for rocketing about and hovering).