Luna spoke up for the first time. “Major, Please calm down. I can understand thou art angered by this attack, as am I. But you unfairly lay the blame upon us. You are still ignorant of many things in this world. Changelings are born and bred to be the perfect spies. Taking any shape and any form to infiltrate and place. They are virtually undetectable, untraceable, and indistinguishable when disguised. We expunged them from Canterlot after they failed to take the capitol by force. ”