Until today, he was director of corporate security for comcast. The Parent Company of msnbc. Lets go live to nbc senior White House Correspondent Chris Jansing. What is the president s reaction . Reporter the official statement is that the president accepted julia piersons resignation, this is their wording. Recent and accumulating reports about the performance of the Agency Required new leadership. But once it was clear that in a series of cases, the president and members of his family were in danger, the situation had really become untenable. And the most recent example, press secretary josh earnest acknowledging that the white house was informed of a breach on september 16th. An armed man with a questionable history on the elevator with the president in atlanta when he went to the cdc. Only yesterday they found out about it just before published reports came out. Only yesterday is when the president reporter only yesterday. Wow. And i pressed him. What is the Standard Operating Proc