Grimes Has Left the Building . . .

. . . and the Obama administration hasn't yet named a replacement for him as assistant secretary of Defense for networks and information integration - in other words, the chief information officer.

My well-placed sources say they have no idea of a likely candidate, with the exception of retired Rear Adm. Robert "Willie" Williamson, who, I'm told, would really like the job. Williamson has the military and industrial credentials for the job, commanding two aircraft carrier battle groups and, after retirement, having held jobs at Raytheon and Microsoft. But I hear other folks also are under consideration by the administration.

Grimes left Defense at the end of April, and shortly thereafter Cheryl Roby took over the post in an acting role until a new candidate is selected, nominated and confirmed. Roby previously served as principal deputy assistant secretary of Defense for networks and information integration, or the deputy CIO.

I'm also told Grimes will spend a month or two relaxing, but those who know him say he'll never retire.