It depends on what you mean by 'covert'

It think that's been spelled out very clearly, to answer the right-wing talking heads who have been trying to muddy the waters over Valerie Flame's status.

Rep Elijah Cummings (D-MD) devoted his entire first round of questioning today to clarifying whether or not Valerie Plame was indeed "covert" at the time of her outing. Let this be the video that sets the record straight once and for all.

Crooks and Liars has the video. It's worth watching.