"I remember Warstriders.  I also remember the incredible cost of their operation, in both money and Essence.  It would be impractical to use, and draw too much attention to ourselves right now.  I think we ought to focus on finding the Empress now; the trail will only get colder as time goes by.  Unless you've got some experience hunting through libraries, I think the best thing you both could do is get cleaned up and rested for what is to come."