Aaron shakes his head. "I went through your records again, and the images that were taken of your lungs and heart. They're not human, that much is clear, but they are also not entirely alien." He takes a deep breath. How to put this? "Avian, actually, is how I'd describe them."

His tone is not casual, not exactly, but certainly calm. His eyes are on Julien's face, watching carefully to see how this theory is received.