Julia Pierson, the first female director of the Secret Service, resigned her post Wednesday after a fence jumper gained access to the White House Sep. 19th and a subsequent congressional inquiry uncovered other security lapses.
Julia Pierson also apologised and described the mistakes as major security failures on multiple fronts.
News of Pierson's resignation came as new information about the fence jumper as well as other security lapses came to light :
Omar Gonzalez, 42, pleaded not guilty to federal and D.C. charges in federal court in Washington on Wednesday.
Meanwhile, the inquiry into how the Army veteran launched over the fence and was able to sprint up to the front door, burst into the White House and run into the ornate East Room continues.
Neither President Obama nor the first family were at home at the time of the incident.
But a Secret Service source tells CNN there is an elaborate closed circuit video system and that video is being dissected to establish new protocols.
When Gonzalez burst through the White House door, he pushed a female officer to the side.
But the source said, ""Gender was not a factor, she got one door secured but was pushed over while trying to get second door shut."
An alarm box had been turned down near the front door, for instance, after complaints by the White House usher's office that it was too loud.
A canine unit was not released to chase Gonzalez, said the source, because there were "too many friendlies around."