“Tightrope walker Philippe Petit snuck into the World Trade Center with a friend in 1974 with massive amounts of equipment, smuggled the equipment to the top floor and rigged up a highwire for his tightrope walking stunt without being detected.
In 2009, Raw Story notes:
A Government Accountability Office investigator smuggled live bomb components into a federal building in just 27 seconds, then assembled a bomb in a restroom and ventured throughout the building without being detected, a leaked tape revealed Wednesday.
In addition, congressional investigators were able to penetrate every single federal building they probed without any difficulty — 10 in all.
And see this.
In fact, there is additional evidence that bombs could have been planted in the World Trade Center without anyone knowing…”
