(Newser) – Fallout from the Edward Snowden revelations? NSA chief Keith Alexander and his top civilian deputy are leaving the agency, reports Reuters. Alexander, whose eight-year reign is the NSA's longest, is expected to be gone by next spring. Deputy Chris Inglis, who has served since 2006, will be gone sooner. The departures could give President Obama a chance to restructure the agency, perhaps by splitting the duties of the NSA chief and the ever-growing US Cyber Command. Alexander, a strong defender of the NSA's eavesdropping practices, currently runs them both. (Another key figure in the Snowden chronicles, journalist Glenn Greenwald, will be getting a new job, too.)