So John Stewart aka Green Lantern is going to be giving your characters some training for the foreseeable future. His job is as much to figure out what they can already do as to bring them up to speed with using the basic marine weapons/space suit. Even though your characters already have their own weapons, they need to at least qualify with the basic Marine ones for the moment, as not everyone's weapons are at the same level of technology so wouldn't do much harm to the Tide or operate in the vaccum of space, etc. It doesn't necessarily mean everyone will have to USE these weapons in the upcoming mission, but it's part of their training / a way for Stewart to see how quickly your character picks up new info, operates with a team and the like. If anyone has any questions let me know here.