Aria and Sophie will attend the meeting, and LOOKS LIKE THEIR STUFF WAS ALREADY MENTIONED, SO.

Sierra may or may not go just in order to see what's going on (maybe, basically) and if so, she wouldn't volunteer for the mission itself because she has nothing useful for it, but she would volunteer to like...be somewhere for after. :| She has Cure back, so she can at least play patch-up patrol after the fact.