Updated List: Who Will Replace Chuck Hagel?

Two potential candidates considered top picks to succeed the departing Secretary of Defense Chuck Hagel now have bowed out of consideration, leading to the emergence of additional names of possible nominees.

Michele Flournoy, a former undersecretary of defense for policy, asked to be pulled from the list and Sen. Jack Reed (D., R.I.), a former Army officer, has said he is not interested in the job.

That leaves former Deputy Secretary of Defense Ashton Carter as the remaining member of the initial pool of possible nominees mentioned by those familiar...