Logan's key security milestones
November 2010: New TSA orders require anyone who opts out of going through the full-body scanner, usually citing concerns about either privacy or radiation, to undergo a full-body pat down. Security officers conducting pat-downs receive five hours of formal training and five hours of on-the-job training. Some passengers are still screened through traditional metal detectors.
July 2011: Software released that shows a silhouette of the person being scanned on a screen about the size of a laptop computer that is attached to the scanning booth, rather the full-body images.