Security at the Bay area's major military installation may have been breached multiple times by a homeless woman.



Suzanne Jensen is accused of sneaking onto MacDill Air Force Base four separate times since October 2012.



Officials said on one occasion, Jensen said she used a garbage can to help her get over a wall.



Jensen, 50, was charged last month with four trespassing charges and possession of a stolen military ID. She has not yet been arrested on the charges and is not yet represented by a lawyer.



Officials said Jensen pleaded guilty to a trespass charge in August 2012 after she was accused of illegally entering Fort Myer in Virginia. She was sentenced to time served.



According to an affidavit, Jensen told authorities she had been living in a boat parked in the base's camp area for eight days.



The case remains under investigation.



Sen. Bill Nelson is asking the Air Force for an explanation and a briefing on security at the base.



Base officials declined to give us an interview, but gave us this statement:

"All incidents are reviewed for security purposes and steps have been taken to eliminate each of the breaches that occurred. With over six million visitors to MacDill each year, our security forces go to great lengths to protect the people and assets assigned to the base. As always, we continue to rely on our local community to assist in identifying those things that look suspicious."