While they are there, Shannon discovers that Anna is pregnant. Shannon is then assigned to help test new aircraft, a pretext for drugging him and pumping him for information about American aircraft. He learns much about Soviet capabilities from the questions he is asked, while only giving up outdated information in return. When Anna discovers this, she initially plans to turn him in, but as she learns he is to be drugged into permanent insensibility, she lets her personal feelings override her sense of duty. Finding herself under suspicion, she disposes of the agent sent to keep an eye on her, steals an aircraft, and escapes back to the West with Shannon.