. . . explain what you did and why you did it.
Rove to unnamed DOJ official during a coaching session to prepare for congressional testimony. [link|http://www.msnbc.msn.com/id/18479265/site/newsweek/|Link].
FWIW and IMO the essential problem the Administration has in this matter is that serving at the pleasure of the President has the corrolary that the decision and ultimate responsibility on who/why to fire had to come from that office.
A simple question of who added the names to the list of those to be fired is yet to be answered. Until that is answered the reason they were added to the list can only be deduced. I [link|http://www.tpmmuckraker.com/archives/003153.php|deduce] Rove. And if it's Rove, the answer to "why" is extremely likely to be to gain election advantage. It's what he does. It's all he does.