I got e-mails from Thane and Miranda to meet them on the Citadel. I'm assuming I was supposed to meet them before the Cerberus attack because I can't find either one of them now. I'm not sure when my last chance to meet them was or if I will have another chance later. Will they try to make contact again? What happens or what do I miss if I don't meet with them? What do you get from meeting them, do they join your crew or just become war assets? Or am I missing a big chunk of mission content or something?