Yeah, Head Alien’s after the Power Booster Rod, which means this has to happen after the story in which the Power Booster Rod is retrieved from the rubble of Head Alien’s Bermuda Triangle base, for starters.  And it can’t happen AFTER this point because stuff starts snowballing and there’s not really any narrative room.  So there really is only a small window for this to occur without breaking anything.

I like that “Formation S” involves just one person.  Everyone else is really extraneous to Sal in general, aren’t they?