After World War 2 the U.S. Government began privatising certain government institutes to prevent corruption at the eve of the cold war. As part of this deal, national security was outsourced to private contractors who had exclusive contracts with the government. Each contractor was only able to get one contract in total - you work for the government, you do nothing else. The private contractors would fulfill various roles previously held by government agencies. Many offices were combined under one strong banner to provide maximum efficiency.
President Eisenhower believed that, in addition to combat corruption, he could also lower the defense budget while still having a strong military force. Over the course of his term, he combined C.I.A., D.O.D., F.B.I. and N.S.A. into one new institution. This new institution was called American Defense Service - A.D.S. for short and became the biggest and best security agency in the world. And ironically enough one of the most corrupt.
Lánhuā Wen, codename Orchid, works for the A.D.S. and not only is she the top ranked infiltrator of the organisation, she is also their best female melee fighter, a cunning tactician and has a degree in psychology. She is the one to call when things get dirty.