Chris Inglis, the deputy director of the National Security Agency and its top civilian official, stepped down this week, according to an agency spokeswoman. Fran Fleisch is now serving as the acting NSA deputy director, the agency's No. 2 position. She had been the NSA executive director, which is the third-highest ranking post. Inglis had previously said he would step down by the end of the year. NSA Director Gen. Keith Alexander plans to retire in the spring.